diff --git a/misc/sampledata.json b/misc/sampledata.json
index c002a50..eef9e1f 100644
--- a/misc/sampledata.json
+++ b/misc/sampledata.json
@@ -2,23 +2,28 @@
 	"groups": [
 		{
 			"id": 1,
-			"name": "Auto"
+			"name": "auto",
+			"label": "Auto"
 		},
 		{
 			"id": 2,
-			"name": "Zug"
+			"name": "zug",
+			"label": "Zug"
 		},
 		{
 			"id": 3,
-			"name": "Flugzeug"
+			"name": "flugzeug",
+			"label": "Flugzeug"
 		},
 		{
 			"id": 4,
-			"name": "Fahrrad"
+			"name": "fahrrad",
+			"label": "Fahrrad"
 		},
 		{
 			"id": 5,
-			"name": "zu Fuß"
+			"name": "zu_fusz",
+			"label": "zu Fuß"
 		}
 	],
 	"admins": [
@@ -32,18 +37,21 @@
 		{
 			"id": 1,
 			"name": "alexandra",
+			"label": "Alexandra Ahorn",
 			"email_address": "alex-rockt@example.org",
 			"groups": [1, 2, 3]
 		},
 		{
 			"id": 2,
 			"name": "berthold",
+			"label": "Berthold Buche",
 			"email_address": "bert-ohne-ernie@example.org",
 			"groups": [4, 5, 2]
 		},
 		{
 			"id": 3,
 			"name": "charlotte",
+			"label": "Charlotte Castania",
 			"email_address": "charly-the-unicorn@example.org",
 			"groups": [4, 1]
 		}
@@ -51,8 +59,10 @@
 	"invitations": [
 		{
 			"id": 1,
-			"name_changeable": true,
+			"name_changeable": false,
 			"name_value": "daniel",
+			"label_changeable": true,
+			"label_value": "Daniel Distel",
 			"email_address_changeable": true,
 			"email_address_value": "duesentrieb@example.org",
 			"groups_changeable": false,
diff --git a/source/api/actions/group_add.ts b/source/api/actions/group_add.ts
index c9bd86c..1c704e7 100644
--- a/source/api/actions/group_add.ts
+++ b/source/api/actions/group_add.ts
@@ -23,7 +23,10 @@ namespace _espe.api
 	) : void
 	{
 		lib_plankton.rest_http.register<
-			string,
+			{
+				name : string;
+				label : string;
+			},
 			(string | _espe.type.group_id)
 		>(
 			rest_subject,
@@ -36,7 +39,22 @@ namespace _espe.api
 				"description": () => "erstellt eine Gruppe",
 				"input_schema": () => ({
 					"nullable": false,
-					"type": "string",
+					"type": "object",
+					"properties": {
+						"name": {
+							"nullable": false,
+							"type": "string",
+						},
+						"label": {
+							"nullable": false,
+							"type": "string",
+						},
+					},
+					"additionalProperties": false,
+					"required": [
+						"name",
+						"label",
+					],
 				}),
 				"output_schema": () => ({
 					"nullable": false,
@@ -53,7 +71,8 @@ namespace _espe.api
 					else {
 						const data = await _espe.service.group.add(
 							{
-								"name": input
+								"name": input["name"],
+								"label": input["label"]
 							}
 						);
 						return Promise.resolve({
diff --git a/source/api/actions/group_list.ts b/source/api/actions/group_list.ts
index ff9ee23..bcccbaf 100644
--- a/source/api/actions/group_list.ts
+++ b/source/api/actions/group_list.ts
@@ -27,7 +27,10 @@ namespace _espe.api
 			Array<
 				{
 					id : _espe.type.invitation_id;
-					name : string;
+					preview : {
+						name : string;
+						label : string;
+					};
 				}
 			>
 		>(
@@ -54,6 +57,11 @@ namespace _espe.api
 							"type": "string",
 							"description": "Name"
 						},
+						"label": {
+							"nullable": false,
+							"type": "string",
+							"description": "Beschriftung"
+						},
 					},
 					"required": [
 						"id",
@@ -65,7 +73,7 @@ namespace _espe.api
 					const data = await _espe.service.group.list();
 					return Promise.resolve({
 						"status_code": 200,
-						"data": data
+						"data": data,
 					});
 				}
 			}
diff --git a/source/api/actions/group_modify.ts b/source/api/actions/group_modify.ts
index 450b135..0bf9657 100644
--- a/source/api/actions/group_modify.ts
+++ b/source/api/actions/group_modify.ts
@@ -24,7 +24,7 @@ namespace _espe.api
 	{
 		lib_plankton.rest_http.register<
 			{
-				name : string;
+				label : string;
 			},
 			null
 		>(
@@ -40,14 +40,14 @@ namespace _espe.api
 					"nullable": false,
 					"type": "object",
 					"properties": {
-						"name": {
+						"label": {
 							"nullable": false,
 							"type": "string",
-						}
+						},
 					},
 					"additionalProperties": false,
 					"required": [
-						"name",
+						"label",
 					]
 				}),
 				"output_schema": () => ({
@@ -63,12 +63,9 @@ namespace _espe.api
 					}
 					else {
 						const group_id : _espe.type.group_id = parseInt(path_parameters["id"]);
-						const group_object : _espe.type.group_object = {
-							"name": input.name,
-						};
 						const data = await _espe.service.group.modify(
 							group_id,
-							group_object
+							input["label"]
 						);
 						return Promise.resolve({
 							"status_code": 200,
diff --git a/source/api/actions/group_read.ts b/source/api/actions/group_read.ts
index 4e9edbf..9434ced 100644
--- a/source/api/actions/group_read.ts
+++ b/source/api/actions/group_read.ts
@@ -26,6 +26,7 @@ namespace _espe.api
 			null,
 			{
 				name : string;
+				label : string;
 			}
 		>(
 			rest_subject,
@@ -43,11 +44,16 @@ namespace _espe.api
 						"name": {
 							"nullable": false,
 							"type": "string",
-						}
+						},
+						"label": {
+							"nullable": false,
+							"type": "string",
+						},
 					},
 					"additionalProperties": false,
 					"required": [
 						"name",
+						"label",
 					]
 				}),
 				"restriction": () => restriction_logged_in,
diff --git a/source/api/actions/invitation_accept.ts b/source/api/actions/invitation_accept.ts
index 2663e14..19474b0 100644
--- a/source/api/actions/invitation_accept.ts
+++ b/source/api/actions/invitation_accept.ts
@@ -26,6 +26,7 @@ namespace _espe.api
 				key : string;
 				data : {
 					name : (null | string);
+					label : (null | string);
 					groups : (null | Array<int>);
 					email_address : (null | string);
 					password : (null | string);
diff --git a/source/api/actions/invitation_create.ts b/source/api/actions/invitation_create.ts
index e00d6c5..b681700 100644
--- a/source/api/actions/invitation_create.ts
+++ b/source/api/actions/invitation_create.ts
@@ -27,6 +27,8 @@ namespace _espe.api
 				data : {
 					name_changeable : boolean;
 					name_value : string;
+					label_changeable : boolean;
+					label_value : string;
 					email_address_changeable : boolean;
 					email_address_value : (null | string);
 					groups_changeable : boolean;
@@ -160,6 +162,8 @@ namespace _espe.api
 							{
 								"name_changeable": input.data.name_changeable,
 								"name_value": input.data.name_value,
+								"label_changeable": input.data.label_changeable,
+								"label_value": input.data.label_value,
 								"email_address_changeable": input.data.email_address_changeable,
 								"email_address_value": input.data.email_address_value,
 								"groups_changeable": input.data.groups_changeable,
diff --git a/source/api/actions/invitation_examine.ts b/source/api/actions/invitation_examine.ts
index 5db11fd..07bbdfa 100644
--- a/source/api/actions/invitation_examine.ts
+++ b/source/api/actions/invitation_examine.ts
@@ -60,6 +60,16 @@ namespace _espe.api
 							"nullable": true,
 							"description": "Name | Wert"
 						},
+						"label_changeable": {
+							"type": "boolean",
+							"nullable": false,
+							"description": "Beschriftung | änderbar"
+						},
+						"label_value": {
+							"type": "string",
+							"nullable": true,
+							"description": "Beschriftung | Wert"
+						},
 						"email_address_changeable": {
 							"type": "boolean",
 							"nullable": false,
@@ -89,6 +99,8 @@ namespace _espe.api
 						"expiry",
 						"name_changeable",
 						"name_value",
+						"label_changeable",
+						"label_value",
 						"email_address_changeable",
 						"email_address_value",
 						"groups_changeable",
@@ -107,6 +119,8 @@ namespace _espe.api
 									"expiry": invitation_object.expiry,
 									"name_changeable": invitation_object.name_changeable,
 									"name_value": invitation_object.name_value,
+									"label_changeable": invitation_object.label_changeable,
+									"label_value": invitation_object.label_value,
 									"email_address_changeable": invitation_object.email_address_changeable,
 									"email_address_value": invitation_object.email_address_value,
 									"groups_changeable": invitation_object.groups_changeable,
diff --git a/source/api/actions/invitation_list.ts b/source/api/actions/invitation_list.ts
index 929ca30..0a2625b 100644
--- a/source/api/actions/invitation_list.ts
+++ b/source/api/actions/invitation_list.ts
@@ -26,9 +26,12 @@ namespace _espe.api
 			Array<
 				{
 					id : _espe.type.invitation_id;
-					key : _espe.type.invitation_key;
-					expiry : (null | int);
-					name_value : (null | string);
+					preview : {
+						key : _espe.type.invitation_key;
+						expiry : (null | int);
+						name_value : (null | string);
+						label_value : (null | string);
+					};
 				}
 			>
 		>(
@@ -65,6 +68,11 @@ namespace _espe.api
 							"type": "string",
 							"description": "Name"
 						},
+						"label_value": {
+							"nullable": false,
+							"type": "string",
+							"description": "Beschriftung"
+						},
 					},
 					"required": [
 						"id",
diff --git a/source/api/actions/invitation_read.ts b/source/api/actions/invitation_read.ts
index 07b77b7..d6e056b 100644
--- a/source/api/actions/invitation_read.ts
+++ b/source/api/actions/invitation_read.ts
@@ -32,6 +32,8 @@ namespace _espe.api
 					expiry : (null | int);
 					name_changeable : boolean;
 					name_value : (null | string);
+					label_changeable : boolean;
+					label_value : (null | string);
 					email_address_changeable : boolean;
 					email_address_value : (null | string);
 					groups_changeable : boolean;
@@ -74,6 +76,16 @@ namespace _espe.api
 							"nullable": true,
 							"description": "Name | Wert"
 						},
+						"label_changeable": {
+							"type": "boolean",
+							"nullable": false,
+							"description": "Beschriftung | änderbar"
+						},
+						"label_value": {
+							"type": "string",
+							"nullable": true,
+							"description": "Beschriftung | Wert"
+						},
 						"email_address_changeable": {
 							"type": "boolean",
 							"nullable": false,
@@ -122,6 +134,8 @@ namespace _espe.api
 									"expiry": invitation_object.expiry,
 									"name_changeable": invitation_object.name_changeable,
 									"name_value": invitation_object.name_value,
+									"label_changeable": invitation_object.label_changeable,
+									"label_value": invitation_object.label_value,
 									"email_address_changeable": invitation_object.email_address_changeable,
 									"email_address_value": invitation_object.email_address_value,
 									"groups_changeable": invitation_object.groups_changeable,
diff --git a/source/api/actions/member_list.ts b/source/api/actions/member_list.ts
index 870806f..84dd06c 100644
--- a/source/api/actions/member_list.ts
+++ b/source/api/actions/member_list.ts
@@ -29,6 +29,7 @@ namespace _espe.api
 					id : int;
 					preview : {
 						name : string;
+						label : string;
 					};
 				}
 			>
@@ -64,11 +65,14 @@ namespace _espe.api
 										"type": "string",
 										"nullable": false,
 									},
+									"label": {
+										"type": "string",
+										"nullable": false,
+									},
 								},
 								"required": [
-									"membership_number",
-									"name_real_value",
-									"name_real_index",
+									"name",
+									"label",
 								]
 							}
 						},
diff --git a/source/api/actions/member_modify.ts b/source/api/actions/member_modify.ts
index 081f163..c39c47a 100644
--- a/source/api/actions/member_modify.ts
+++ b/source/api/actions/member_modify.ts
@@ -24,6 +24,7 @@ namespace _espe.api
 	{
 		lib_plankton.rest_http.register<
 			{
+				label : string;
 				email_address : (null | string);
 				groups ?: Array<int>;
 				enabled : boolean;
@@ -39,6 +40,10 @@ namespace _espe.api
 					"nullable": false,
 					"type": "object",
 					"properties": {
+						"label": {
+							"nullable": true,
+							"type": "string"
+						},
 						"email_address": {
 							"nullable": true,
 							"type": "string"
@@ -75,6 +80,7 @@ namespace _espe.api
 						await _espe.service.member.modify(
 							member_id,
 							{
+								"label": input.label,
 								"email_address": input.email_address,
 								"groups": (
 									(input.groups === undefined)
diff --git a/source/api/actions/member_read.ts b/source/api/actions/member_read.ts
index b988bcb..1da2c40 100644
--- a/source/api/actions/member_read.ts
+++ b/source/api/actions/member_read.ts
@@ -26,6 +26,7 @@ namespace _espe.api
 			null,
 			{
 				name : string;
+				label : string;
 				email_address : (null | string);
 				groups : Array<int>;
 				enabled : boolean;
@@ -45,6 +46,10 @@ namespace _espe.api
 							"nullable": false,
 							"type": "string"
 						},
+						"label": {
+							"nullable": false,
+							"type": "string"
+						},
 						"email_address": {
 							"nullable": true,
 							"type": "string"
@@ -65,6 +70,7 @@ namespace _espe.api
 					"additionalProperties": false,
 					"required": [
 						"name",
+						"label",
 						"email_address",
 						"groups",
 						"enabled",
@@ -79,6 +85,7 @@ namespace _espe.api
 						"status_code": 200,
 						"data": {
 							"name": member_object.name,
+							"label": member_object.label,
 							"email_address": member_object.email_address,
 							"groups": member_object.groups,
 							"enabled": member_object.enabled,
diff --git a/source/repositories/group.ts b/source/repositories/group.ts
index c4c4ace..de4103d 100644
--- a/source/repositories/group.ts
+++ b/source/repositories/group.ts
@@ -73,6 +73,7 @@ namespace _espe.repository.group
 	{
 		return {
 			"name": object.name,
+			"label": object.label,
 		};
 	}
 	
@@ -85,6 +86,7 @@ namespace _espe.repository.group
 	{
 		return {
 			"name": dispersal["name"],
+			"label": dispersal["label"],
 		};
 	}
 	
@@ -98,7 +100,10 @@ namespace _espe.repository.group
 		Array<
 			{
 				id : _espe.type.group_id;
-				name : string;
+				preview : {
+					name : string;
+					label : string;
+				};
 			}
 		>
 	>
@@ -121,7 +126,10 @@ namespace _espe.repository.group
 			.map(
 				({"key": key, "preview": preview}) => ({
 					"id": key,
-					"name": preview["name"],
+					"preview": {
+						"name": preview["name"],
+						"label": preview["label"],
+					},
 				})
 			)
 		);
diff --git a/source/repositories/invitation.ts b/source/repositories/invitation.ts
index 78bf4e2..ed07f86 100644
--- a/source/repositories/invitation.ts
+++ b/source/repositories/invitation.ts
@@ -121,6 +121,8 @@ namespace _espe.repository.invitation
 				"expiry": object.expiry,
 				"name_changeable": _espe.helpers.dbbool_encode(object.name_changeable),
 				"name_value": object.name_value,
+				"label_changeable": _espe.helpers.dbbool_encode(object.label_changeable),
+				"label_value": object.label_value,
 				"email_address_changeable": _espe.helpers.dbbool_encode(object.email_address_changeable),
 				"email_address_value": object.email_address_value,
 				"groups_changeable": _espe.helpers.dbbool_encode(object.groups_changeable),
@@ -148,6 +150,8 @@ namespace _espe.repository.invitation
 			"expiry": dispersal.core_row["expiry"],
 			"name_changeable": _espe.helpers.dbbool_decode(dispersal.core_row["name_changeable"]),
 			"name_value": dispersal.core_row["name_value"],
+			"label_changeable": _espe.helpers.dbbool_decode(dispersal.core_row["label_changeable"]),
+			"label_value": dispersal.core_row["label_value"],
 			"email_address_changeable": _espe.helpers.dbbool_decode(dispersal.core_row["email_address_changeable"]),
 			"email_address_value": dispersal.core_row["email_address_value"],
 			"groups_changeable": _espe.helpers.dbbool_decode(dispersal.core_row["groups_changeable"]),
@@ -193,6 +197,7 @@ namespace _espe.repository.invitation
 					"id": key,
 					"preview": {
 						"name": preview["name_value"],
+						"label": preview["label_value"],
 					}
 				})
 			)
diff --git a/source/repositories/member.ts b/source/repositories/member.ts
index 6e15a53..7a8a6d3 100644
--- a/source/repositories/member.ts
+++ b/source/repositories/member.ts
@@ -118,6 +118,7 @@ namespace _espe.repository.member
 		return {
 			"core_row": {
 				"name": object.name,
+				"label": object.label,
 				"email_address": object.email_address,
 				"enabled": _espe.helpers.dbbool_encode(object.enabled),
 				"password_image": object.password_image,
@@ -144,6 +145,7 @@ namespace _espe.repository.member
 	{
 		return {
 			"name": dispersal.core_row["name"],
+			"label": dispersal.core_row["label"],
 			"email_address": dispersal.core_row["email_address"],
 			"groups": lib_plankton.list.sorted<_espe.type.group_id>(
 				dispersal.group_rows.map(row => row["group_id"]),
@@ -170,6 +172,7 @@ namespace _espe.repository.member
 				id : _espe.type.member_id;
 				preview : {
 					name : string;
+					label : string;
 				};
 			}
 		>
@@ -195,6 +198,7 @@ namespace _espe.repository.member
 					"id": key,
 					"preview": {
 						"name": preview["name"],
+						"label": preview["label"],
 					}
 				})
 			)
diff --git a/source/sample.ts b/source/sample.ts
index 42e4500..f0db8f7 100644
--- a/source/sample.ts
+++ b/source/sample.ts
@@ -23,6 +23,7 @@ namespace _espe.sample
 			{
 				id : int;
 				name : string;
+				label : string;
 			}
 		>;
 		admins : Array<
@@ -37,6 +38,7 @@ namespace _espe.sample
 			{
 				id : int;
 				name : string;
+				label : string;
 				email_address : (null | string);
 				groups : Array<int>;
 			}
@@ -46,6 +48,8 @@ namespace _espe.sample
 				id : int;
 				name_changeable : boolean;
 				name_value : string;
+				label_changeable : boolean;
+				label_value : string;
 				email_address_changeable : boolean;
 				email_address_value : (null | string);
 				groups_changeable : boolean;
@@ -69,6 +73,7 @@ namespace _espe.sample
 				const group_id : _espe.type.group_id = await _espe.service.group.add(
 					{
 						"name": group_raw.name,
+						"label": group_raw.label,
 					}
 				);
 				track_groups.set(group_raw.id, group_id);
@@ -92,6 +97,7 @@ namespace _espe.sample
 				const member_id : _espe.type.member_id = await _espe.service.member.project(
 					{
 						"name": member_raw.name,
+						"label": member_raw.label,
 						"email_address": member_raw.email_address,
 						"groups": member_raw.groups.map(group_id => track_groups.get(group_id)),
 					},
@@ -112,6 +118,8 @@ namespace _espe.sample
 					{
 						"name_changeable": invitation_raw.name_changeable,
 						"name_value": invitation_raw.name_value,
+						"label_changeable": invitation_raw.label_changeable,
+						"label_value": invitation_raw.label_value,
 						"email_address_changeable": invitation_raw.email_address_changeable,
 						"email_address_value": invitation_raw.email_address_value,
 						"groups_changeable": invitation_raw.groups_changeable,
diff --git a/source/services/group.ts b/source/services/group.ts
index 9ebd9f0..3f89862 100644
--- a/source/services/group.ts
+++ b/source/services/group.ts
@@ -19,7 +19,17 @@ namespace _espe.service.group
 	/**
 	 */
 	export function list(
-	) : Promise<Array<{id : _espe.type.group_id; name : string;}>>
+	) : Promise<
+		Array<
+			{
+				id : _espe.type.group_id;
+				preview : {
+					name : string;
+					label : string;
+				};
+			}
+		>
+	>
 	{
 		return _espe.repository.group.list(null);
 	}
@@ -47,12 +57,14 @@ namespace _espe.service.group
 	
 	/**
 	 */
-	export function modify(
+	export async function modify(
 		id : _espe.type.group_id,
-		object : _espe.type.group_object
+		label : string
 	) : Promise<void>
 	{
-		return _espe.repository.group.update(id, object);
+		const object : _espe.type.group_object = await _espe.repository.group.read(id);
+		object.label = label;
+		await _espe.repository.group.update(id, object);
 	}
 	
 }
diff --git a/source/services/invitation.ts b/source/services/invitation.ts
index 5a3b56e..5a5d513 100644
--- a/source/services/invitation.ts
+++ b/source/services/invitation.ts
@@ -23,9 +23,12 @@ namespace _espe.service.invitation
 		Array<
 			{
 				id : _espe.type.invitation_id;
-				key : _espe.type.invitation_key;
-				expiry : (null | int);
-				name_value : (null | string);
+				preview : {
+					key : _espe.type.invitation_key;
+					expiry : (null | int);
+					name_value : (null | string);
+					label_value : (null | string);
+				};
 			}
 		>
 	>
@@ -37,9 +40,12 @@ namespace _espe.service.invitation
 					entries.map(
 						entry => ({
 							"id": entry.id,
-							"key": entry.object.key,
-							"expiry": entry.object.expiry,
-							"name_value": entry.object.name_value
+							"preview": {
+								"key": entry.object.key,
+								"expiry": entry.object.expiry,
+								"name_value": entry.object.name_value,
+								"label_value": entry.object.label_value,
+							}
 						})
 					)
 				)
@@ -54,6 +60,8 @@ namespace _espe.service.invitation
 		{
 			"name_changeable": name_changeable,
 			"name_value": name_value,
+			"label_changeable": label_changeable,
+			"label_value": label_value,
 			"email_address_changeable": email_address_changeable,
 			"email_address_value": email_address_value,
 			"groups_changeable": groups_changeable,
@@ -61,6 +69,8 @@ namespace _espe.service.invitation
 		} : {
 			name_changeable : boolean;
 			name_value : string;
+			label_changeable : boolean;
+			label_value : string;
 			email_address_changeable : boolean;
 			email_address_value : (null | string);
 			groups_changeable : boolean;
@@ -106,6 +116,8 @@ namespace _espe.service.invitation
 			),
 			"name_changeable": name_changeable,
 			"name_value": name_value,
+			"label_changeable": label_changeable,
+			"label_value": label_value,
 			"email_address_changeable": email_address_changeable,
 			"email_address_value": email_address_value,
 			"groups_changeable": groups_changeable,
@@ -247,6 +259,7 @@ namespace _espe.service.invitation
 		key : _espe.type.invitation_key,
 		data : {
 			name : (null | string);
+			label : (null | string);
 			groups : (null | Array<_espe.type.group_id>);
 			email_address : (null | string);
 			password : (null | string);
@@ -320,6 +333,15 @@ namespace _espe.service.invitation
 									invitation_object.name_value
 								) as string
 							),
+							"label": (
+								(
+									invitation_object.label_changeable
+									?
+									data.label
+									:
+									invitation_object.label_value
+								) as string
+							),
 							"email_address": (
 								(
 									invitation_object.email_address_changeable
diff --git a/source/services/member.ts b/source/services/member.ts
index ae997c5..98ee48f 100644
--- a/source/services/member.ts
+++ b/source/services/member.ts
@@ -103,7 +103,11 @@ namespace _espe.service.member
 		object : _espe.type.member_object
 	) : string
 	{
-		return object.name;
+		return (
+			object.label
+			??
+			object.name
+		);
 	}
 	
 	
@@ -229,6 +233,7 @@ namespace _espe.service.member
 				id : _espe.type.member_id;
 				preview : {
 					name : string;
+					label : string;
 				};
 			}
 		>
@@ -256,6 +261,7 @@ namespace _espe.service.member
 	export async function project(
 		data : {
 			name : string;
+			label : string;
 			email_address : (null | string);
 			groups : Array<_espe.type.group_id>;
 		},
@@ -269,6 +275,7 @@ namespace _espe.service.member
 	{
 		const object : _espe.type.member_object = {
 			"name": data.name,
+			"label": data.label,
 			"email_address": data.email_address,
 			"groups": data.groups,
 			"enabled": true,
@@ -295,6 +302,7 @@ namespace _espe.service.member
 	export async function add(
 		data : {
 			name : string;
+			label : string;
 			email_address : (null | string);
 			groups : Array<_espe.type.group_id>;
 			password : string;
@@ -309,6 +317,7 @@ namespace _espe.service.member
 	{
 		const object : _espe.type.member_object = {
 			"name": data.name,
+			"label": data.label,
 			"email_address": data.email_address,
 			"groups": data.groups,
 			"enabled": true,
@@ -391,6 +400,7 @@ namespace _espe.service.member
 	export async function modify(
 		member_id : _espe.type.member_id,
 		data : {
+			label : string;
 			email_address : (null | string);
 			enabled : boolean;
 			groups : lib_plankton.pod.type_pod<Array<_espe.type.group_id>>;
@@ -400,6 +410,7 @@ namespace _espe.service.member
 		const member_object_old : _espe.type.member_object = await get(member_id);
 		const member_object_new : _espe.type.member_object = {
 			"name": member_object_old.name,
+			"label": data.label,
 			"email_address": data.email_address,
 			"groups": (
 				lib_plankton.pod.is_filled<Array<_espe.type.group_id>>(data.groups)
@@ -494,6 +505,7 @@ namespace _espe.service.member
 					const token : string = await _espe.helpers.verification_get(Math.floor(Math.random() * (1 << 24)));
 					const member_object_new : _espe.type.member_object = {
 						"name": member_object_old.name,
+						"label": member_object_old.label,
 						"email_address": member_object_old.email_address,
 						"enabled": member_object_old.enabled,
 						"groups": member_object_old.groups,
@@ -585,6 +597,7 @@ namespace _espe.service.member
 				else {
 					const member_object_new : _espe.type.member_object = {
 						"name": member_object_old.name,
+						"label": member_object_old.label,
 						"email_address": member_object_old.email_address,
 						"groups": member_object_old.groups,
 						"enabled": member_object_old.enabled,
@@ -638,6 +651,34 @@ namespace _espe.service.member
 			groups : Array<string>;
 			password : string;
 		};
+		
+		const groups_as_array : Array<
+			{
+				id : _espe.type.group_id;
+				preview : {
+					name : string;
+					label : string;
+				};
+			}
+		> = await _espe.service.group.list();
+		const groups_as_map : Map<
+			_espe.type.group_id,
+			_espe.type.group_object
+		> = new Map<
+			_espe.type.group_id,
+			_espe.type.group_object
+		>();
+		for (const group_entry of groups_as_array)
+		{
+			groups_as_map.set(
+				group_entry.id,
+				{
+					"name": group_entry.preview.name,
+					"label": group_entry.preview.label,
+				}
+			);
+		}
+		
 		return lib_plankton.call.convey(
 			(
 				(
@@ -673,10 +714,16 @@ namespace _espe.service.member
 							"disabled": (! entry.object.enabled),
 							"displayname": name_display(entry.object),
 							"email": entry.email_address,
-							/**
-							 * @todo covert to string
-							 */
-							"groups": entry.object.groups,
+							"groups": (
+								entry.object.groups
+								.map(
+									(group_id : _espe.type.group_id) => (
+										groups_as_map.get(group_id)?.name
+										??
+										group_id.toFixed(0)
+									)
+								)
+							),
 							"password": entry.object.password_image,
 						}
 					])
diff --git a/source/types.ts b/source/types.ts
index 0156eb3..a0d4c38 100644
--- a/source/types.ts
+++ b/source/types.ts
@@ -25,6 +25,7 @@ namespace _espe.type
 	 */
 	export type group_object = {
 		name : string;
+		label : string;
 	};
 	
 	
@@ -52,6 +53,7 @@ namespace _espe.type
 	 */
 	export type member_object = {
 		name : string;
+		label : string;
 		email_address : (null | string);
 		groups : Array<group_id>;
 		enabled : boolean;
@@ -79,6 +81,8 @@ namespace _espe.type
 		expiry : (null | int);
 		name_changeable : boolean;
 		name_value : (null | string);
+		label_changeable : boolean;
+		label_value : (null | string);
 		email_address_changeable : boolean;
 		email_address_value : (null | string);
 		groups_changeable : boolean;