diff --git a/apps/admin-gui/src/app/shared/components/dialogs/add-member-dialog/add-member-dialog.component.html b/apps/admin-gui/src/app/shared/components/dialogs/add-member-dialog/add-member-dialog.component.html
index b71a93033..35665514f 100644
--- a/apps/admin-gui/src/app/shared/components/dialogs/add-member-dialog/add-member-dialog.component.html
+++ b/apps/admin-gui/src/app/shared/components/dialogs/add-member-dialog/add-member-dialog.component.html
@@ -22,7 +22,7 @@ <h1 mat-dialog-title>{{'DIALOGS.ADD_MEMBERS.TITLE' | translate}}</h1>
     <div class="no-bounce-scrollbar">
       <mat-spinner *ngIf="loading" class="mr-auto ml-auto"></mat-spinner>
     </div>
-    <div class="mt-3" *ngIf="members !== null && !loading">
+    <div class="mt-3" *ngIf="!!members && !loading">
       <app-alert *ngIf="members.length === 0 && firstSearchDone" color="warn">
         {{'DIALOGS.ADD_MEMBERS.NO_USERS_FOUND' | translate}}
       </app-alert>
diff --git a/apps/admin-gui/src/app/shared/components/dialogs/add-member-dialog/add-member-dialog.component.ts b/apps/admin-gui/src/app/shared/components/dialogs/add-member-dialog/add-member-dialog.component.ts
index e7da05454..1931e49b4 100644
--- a/apps/admin-gui/src/app/shared/components/dialogs/add-member-dialog/add-member-dialog.component.ts
+++ b/apps/admin-gui/src/app/shared/components/dialogs/add-member-dialog/add-member-dialog.component.ts
@@ -1,16 +1,19 @@
-import {Component, Inject, OnInit} from '@angular/core';
-import {MAT_DIALOG_DATA, MatDialogRef} from '@angular/material';
-import {TranslateService} from '@ngx-translate/core';
-import {NotificatorService} from '../../../../core/services/common/notificator.service';
-import {ActivatedRoute, Router} from '@angular/router';
-import {SelectionModel} from '@angular/cdk/collections';
-import { MembersService, RegistrarService, VoService } from '@perun-web-apps/perun/services';
-import { MemberCandidate } from '@perun-web-apps/perun/models';
+import { Component, Inject, OnInit } from '@angular/core';
+import { MAT_DIALOG_DATA, MatDialogRef } from '@angular/material';
+import { TranslateService } from '@ngx-translate/core';
+import { NotificatorService } from '../../../../core/services/common/notificator.service';
+import { ActivatedRoute, Router } from '@angular/router';
+import { SelectionModel } from '@angular/cdk/collections';
+import { GroupService, MembersService, RegistrarService, VoService } from '@perun-web-apps/perun/services';
+import { Group, MemberCandidate } from '@perun-web-apps/perun/models';
 import { Urns } from '@perun-web-apps/perun/urns';
 
 export interface AddMemberDialogData {
-  voId: number;
+  voId?: number;
+  entityId: number;
+  group?: Group;
   theme: string;
+  type: 'vo' | 'group';
 }
 
 @Component({
@@ -24,6 +27,7 @@ export class AddMemberDialogComponent implements OnInit {
     private dialogRef: MatDialogRef<AddMemberDialogComponent>,
     @Inject(MAT_DIALOG_DATA) private data: AddMemberDialogData,
     private memberService: MembersService,
+    private groupService: GroupService,
     private voService: VoService,
     private registrarService: RegistrarService,
     private translate: TranslateService,
@@ -58,23 +62,40 @@ export class AddMemberDialogComponent implements OnInit {
   onAdd(): void {
     this.processing = true;
     // TODO Adds only one member at the time. In the future there would be need to add more
-    this.memberService.addMember(this.data.voId, this.selection.selected[0].richUser.id).subscribe(() => {
-      this.translate.get('DIALOGS.ADD_MEMBERS.SUCCESS').subscribe(() => {
-        this.notificator.showSuccess(this.successMessage);
-        this.dialogRef.close();
-        this.processing = false;
-      });
-    });
+    const selectedMemberCandidate = this.selection.selected[0];
+
+    if (this.data.type === 'vo') {
+      if (!!selectedMemberCandidate.richUser) {
+        this.addUserToVo(selectedMemberCandidate);
+      } else {
+        this.addCandidateToVo(selectedMemberCandidate);
+      }
+    } else if (this.data.type === 'group') {
+      if (!!selectedMemberCandidate.member) {
+        this.addMemberToGroup(selectedMemberCandidate);
+      }
+      else if (!!selectedMemberCandidate.richUser) {
+        this.addUserToGroup(selectedMemberCandidate);
+      }
+      else if (!!selectedMemberCandidate.candidate) {
+        this.addCandidateToGroup(selectedMemberCandidate);
+      }
+    }
   }
 
   onInvite(): void {
+
     // TODO Was not tested properly. Need to be tested on devel.
-   this.registrarService.sendInvitationToExistingUser(this.selection.selected[0].richUser.id, this.data.voId).subscribe(() => {
-      this.translate.get('DIALOGS.ADD_MEMBERS.SUCCESS_INVITE').subscribe(() => {
-        this.notificator.showSuccess(this.successInviteMessage);
-        this.dialogRef.close();
-     });
-    });
+    if (this.data.type === 'vo') {
+      this.registrarService.sendInvitationToExistingUser(this.selection.selected[0].richUser.id, this.data.entityId).subscribe(() => {
+        this.translate.get('DIALOGS.ADD_MEMBERS.SUCCESS_INVITE').subscribe(() => {
+          this.notificator.showSuccess(this.successInviteMessage);
+          this.dialogRef.close();
+        });
+      });
+    } else if (this.data.type === 'group') {
+      //TODO
+    }
   }
 
   onSearchByString() {
@@ -83,7 +104,10 @@ export class AddMemberDialogComponent implements OnInit {
     this.selection.clear();
 
     // TODO properly test it on devel when possible.
-    this.voService.getCompleteCandidates(this.data.voId,
+
+    this.voService.getCompleteCandidates(
+      this.data.entityId,
+      this.data.type,
       [Urns.USER_DEF_ORGANIZATION, Urns.USER_DEF_PREFERRED_MAIL], this.searchString).subscribe(
       members => {
         this.members = members;
@@ -98,4 +122,47 @@ export class AddMemberDialogComponent implements OnInit {
     this.theme = this.data.theme;
   }
 
+  private addUserToVo(selectedMemberCandidate: MemberCandidate) {
+    this.memberService.createMember(this.data.entityId, selectedMemberCandidate.richUser.id).subscribe(() => {
+      this.onAddSuccess();
+    }, () => this.onError());
+  }
+
+  private addCandidateToVo(selectedMemberCandidate: MemberCandidate) {
+    this.memberService.createMemberForCandidate(
+      this.data.entityId, selectedMemberCandidate.candidate).subscribe(() => {
+      this.onAddSuccess();
+    }, () => this.onError());
+  }
+
+  private addUserToGroup(selectedMemberCandidate: MemberCandidate) {
+    this.memberService.createMemberWithGroups(
+      this.data.voId, selectedMemberCandidate.richUser.id, [this.data.group]).subscribe(() => {
+      this.onAddSuccess();
+    }, () => this.onError());
+  }
+
+  private addMemberToGroup(selectedMemberCandidate: MemberCandidate) {
+    this.groupService.addMembers(this.data.entityId, [selectedMemberCandidate.member.id]).subscribe(() => {
+      this.onAddSuccess();
+    }, () => this.onError());
+  }
+
+  private addCandidateToGroup(selectedMemberCandidate: MemberCandidate) {
+    this.memberService.createMemberForCandidateWithGroups(
+      this.data.voId, selectedMemberCandidate.candidate, [this.data.group]).subscribe(() => {
+      this.onAddSuccess();
+    }, () => this.onError());
+  }
+
+  private onAddSuccess() {
+    this.translate.get('DIALOGS.ADD_MEMBERS.SUCCESS').subscribe(() => {
+      this.notificator.showSuccess(this.successMessage);
+      this.dialogRef.close();
+    });
+  }
+
+  private onError() {
+      this.processing = false;
+  }
 }
diff --git a/apps/admin-gui/src/app/shared/components/dialogs/remove-members-dialog/remove-members-dialog.component.html b/apps/admin-gui/src/app/shared/components/dialogs/remove-members-dialog/remove-members-dialog.component.html
index cf9b673c6..a2f1b6379 100644
--- a/apps/admin-gui/src/app/shared/components/dialogs/remove-members-dialog/remove-members-dialog.component.html
+++ b/apps/admin-gui/src/app/shared/components/dialogs/remove-members-dialog/remove-members-dialog.component.html
@@ -1,7 +1,7 @@
 <h1 mat-dialog-title>{{'DIALOGS.REMOVE_MEMBERS.TITLE' | translate}}</h1>
 <div mat-dialog-content *ngIf="!loading">
   <p>
-    {{'DIALOGS.REMOVE_MEMBERS.DESCRIPTION' | translate}}
+    {{(!!data.groupId ? 'DIALOGS.REMOVE_MEMBERS.DESCRIPTION_GROUP' : 'DIALOGS.REMOVE_MEMBERS.DESCRIPTION') | translate}}
   </p>
 
   <div class="font-weight-bold">
@@ -36,6 +36,6 @@ <h1 mat-dialog-title>{{'DIALOGS.REMOVE_MEMBERS.TITLE' | translate}}</h1>
     class="ml-2"
     color="warn"
     (click)="onSubmit()">
-    {{'DIALOGS.DELETE_GROUP.DELETE' | translate}}
+    {{(!!data.groupId ? 'DIALOGS.REMOVE_MEMBERS.REMOVE_GROUP' : 'DIALOGS.REMOVE_MEMBERS.REMOVE') | translate}}
   </button>
 </div>
diff --git a/apps/admin-gui/src/app/shared/components/dialogs/remove-members-dialog/remove-members-dialog.component.ts b/apps/admin-gui/src/app/shared/components/dialogs/remove-members-dialog/remove-members-dialog.component.ts
index 3c8a5917d..f84328667 100644
--- a/apps/admin-gui/src/app/shared/components/dialogs/remove-members-dialog/remove-members-dialog.component.ts
+++ b/apps/admin-gui/src/app/shared/components/dialogs/remove-members-dialog/remove-members-dialog.component.ts
@@ -3,10 +3,11 @@ import {MAT_DIALOG_DATA, MatDialogRef, MatTableDataSource} from '@angular/materi
 import {NotificatorService} from '../../../../core/services/common/notificator.service';
 import {TranslateService} from '@ngx-translate/core';
 import { RichMember } from '@perun-web-apps/perun/models';
-import { MembersService } from '@perun-web-apps/perun/services';
+import { GroupService, MembersService } from '@perun-web-apps/perun/services';
 
 export interface RemoveMembersDialogData {
   members: RichMember[];
+  groupId?: number;
 }
 @Component({
   selector: 'app-remove-members-dialog',
@@ -19,6 +20,7 @@ export class RemoveMembersDialogComponent implements OnInit {
     public dialogRef: MatDialogRef<RemoveMembersDialogComponent>,
     @Inject(MAT_DIALOG_DATA) public data: RemoveMembersDialogData,
     private membersService: MembersService,
+    private groupService: GroupService,
     private notificator: NotificatorService,
     private translate: TranslateService
   ) { }
@@ -38,14 +40,25 @@ export class RemoveMembersDialogComponent implements OnInit {
 
   onSubmit() {
     this.loading = true;
-    this.membersService.deleteMembers(this.data.members.map(m => m.id)).subscribe(() => {
-      this.translate.get('DIALOGS.REMOVE_MEMBERS.SUCCESS').subscribe(successMessage => {
-        this.notificator.showSuccess(successMessage);
-        this.dialogRef.close(true);
-        this.loading = false;
-      });
-    }, () => {
-      this.loading = false;
-    });
+    if (!!this.data.groupId) {
+      this.groupService.removeMembers(this.data.groupId, this.data.members.map(m => m.id))
+        .subscribe(() => this.onSuccess(), () => this.onError());
+    } else {
+      this.membersService.deleteMembers(this.data.members.map(m => m.id))
+        .subscribe(() => this.onSuccess(), () => this.onError());
+    }
+  }
+
+  onSuccess() {
+    const message = !!this.data.groupId ?
+      this.translate.instant('DIALOGS.REMOVE_MEMBERS.SUCCESS_GROUP'):
+      this.translate.instant('DIALOGS.REMOVE_MEMBERS.SUCCESS');
+    this.notificator.showSuccess(message);
+    this.dialogRef.close(true);
+    this.loading = false;
+  }
+
+  onError() {
+    this.loading = false;
   }
 }
diff --git a/apps/admin-gui/src/app/shared/pipes/member-candidate-email.pipe.ts b/apps/admin-gui/src/app/shared/pipes/member-candidate-email.pipe.ts
index b03487ace..1a4a74a38 100644
--- a/apps/admin-gui/src/app/shared/pipes/member-candidate-email.pipe.ts
+++ b/apps/admin-gui/src/app/shared/pipes/member-candidate-email.pipe.ts
@@ -8,7 +8,7 @@ import { parseEmail, parseUserEmail } from '@perun-web-apps/perun/utils';
 export class MemberCandidateEmailPipe implements PipeTransform {
 
   transform(value: MemberCandidate): any {
-    return value.member ? parseEmail(value.member) : parseUserEmail(value.richUser);
+    return !!value.member && !!value.member.memberAttributes ? parseEmail(value.member) : parseUserEmail(value.richUser);
   }
 
 }
diff --git a/apps/admin-gui/src/app/vos/pages/group-detail-page/group-members/group-members.component.ts b/apps/admin-gui/src/app/vos/pages/group-detail-page/group-members/group-members.component.ts
index 36f8206bd..c5c337e0e 100644
--- a/apps/admin-gui/src/app/vos/pages/group-detail-page/group-members/group-members.component.ts
+++ b/apps/admin-gui/src/app/vos/pages/group-detail-page/group-members/group-members.component.ts
@@ -4,6 +4,9 @@ import {SelectionModel} from '@angular/cdk/collections';
 import { GroupService, MembersService } from '@perun-web-apps/perun/services';
 import { Group, RichMember } from '@perun-web-apps/perun/models';
 import { Urns } from '@perun-web-apps/perun/urns';
+import { AddMemberDialogComponent } from '../../../../shared/components/dialogs/add-member-dialog/add-member-dialog.component';
+import { MatDialog } from '@angular/material';
+import { RemoveMembersDialogComponent } from '../../../../shared/components/dialogs/remove-members-dialog/remove-members-dialog.component';
 
 @Component({
   selector: 'app-group-members',
@@ -17,10 +20,13 @@ export class GroupMembersComponent implements OnInit {
   // used for router animation
   @HostBinding('class.router-component') true;
 
-  constructor(private membersService: MembersService,
-              private groupService: GroupService,
-              protected route: ActivatedRoute,
-              protected router: Router) { }
+  constructor(
+    private membersService: MembersService,
+    private groupService: GroupService,
+    protected route: ActivatedRoute,
+    protected router: Router,
+    private dialog: MatDialog
+  ) { }
 
   group: Group;
 
@@ -66,7 +72,22 @@ export class GroupMembersComponent implements OnInit {
   }
 
   onAddMember() {
+    const dialogRef = this.dialog.open(AddMemberDialogComponent, {
+      width: '1000px',
+      data: {
+        voId: this.group.voId,
+        group: this.group,
+        entityId: this.group.id,
+        theme: 'group-theme',
+        type: 'group',
+      }
+    });
 
+    dialogRef.afterClosed().subscribe(() => {
+      if (this.firstSearchDone) {
+        this.refreshTable();
+      }
+    });
   }
 
   onKeyInput(event: KeyboardEvent) {
@@ -76,6 +97,19 @@ export class GroupMembersComponent implements OnInit {
   }
 
   onRemoveMembers() {
+    const dialogRef = this.dialog.open(RemoveMembersDialogComponent, {
+      width: '450px',
+      data: {
+        groupId: this.group.id,
+        members: this.selection.selected
+      }
+    });
+
+    dialogRef.afterClosed().subscribe(wereMembersDeleted => {
+      if (wereMembersDeleted) {
+        this.refreshTable();
+      }
+    });
   }
 
   refreshTable() {
diff --git a/apps/admin-gui/src/app/vos/pages/vo-detail-page/vo-members/vo-members.component.ts b/apps/admin-gui/src/app/vos/pages/vo-detail-page/vo-members/vo-members.component.ts
index f2e893ca8..8abc0964d 100644
--- a/apps/admin-gui/src/app/vos/pages/vo-detail-page/vo-members/vo-members.component.ts
+++ b/apps/admin-gui/src/app/vos/pages/vo-detail-page/vo-members/vo-members.component.ts
@@ -92,7 +92,11 @@ export class VoMembersComponent implements OnInit {
   onAddMember() {
     const dialogRef = this.dialog.open(AddMemberDialogComponent, {
       width: '1000px',
-      data: {voId: this.vo.id, theme: 'vo-theme'}
+      data: {
+        entityId: this.vo.id,
+        theme: 'vo-theme',
+        type: 'vo'
+      }
     });
 
     dialogRef.afterClosed().subscribe(() => {
diff --git a/apps/admin-gui/src/assets/i18n/en.json b/apps/admin-gui/src/assets/i18n/en.json
index 1fa235dc3..bc26a73cf 100644
--- a/apps/admin-gui/src/assets/i18n/en.json
+++ b/apps/admin-gui/src/assets/i18n/en.json
@@ -601,8 +601,12 @@
     "REMOVE_MEMBERS": {
       "TITLE": "Confirm removal",
       "DESCRIPTION": "Following members will be removed from VO and their settings will be lost.\n\nYou can consider changing their status to \"DISABLED\", which will prevent them from accessing VO resources.",
+      "DESCRIPTION_GROUP": "Following members will be removed from group. They will lose access to resources provided by this group.",
       "ASK": "Do you want to proceed?",
-      "SUCCESS": "Selected members were deleted"
+      "SUCCESS": "Selected members were deleted",
+      "SUCCESS_GROUP": "Selected members were removed",
+      "REMOVE": "Delete",
+      "REMOVE_GROUP": "Remove"
     },
     "REMOVE_RESOURCES": {
       "TITLE": "Confirm removal",
diff --git a/libs/perun/services/src/lib/group.service.ts b/libs/perun/services/src/lib/group.service.ts
index b853b2a92..7d605b7cf 100644
--- a/libs/perun/services/src/lib/group.service.ts
+++ b/libs/perun/services/src/lib/group.service.ts
@@ -78,4 +78,18 @@ export class GroupService {
   getVoOfGroup(id: number, showNotificationOnError = true): Observable<Vo> {
     return this.apiService.get(`json/groupsManager/getVo?group=${id}`, new HttpParams(), showNotificationOnError);
   }
+
+  addMembers(group: number, members: number[], showNotificationOnError: boolean = true): Observable<void> {
+    return this.apiService.post('json/groupsManager/addMembers', {
+      group: group,
+      members: members
+      }, showNotificationOnError);
+  }
+
+  removeMembers(group: number, members: number[], showNotificationOnError: boolean = true): Observable<any> {
+    return this.apiService.post('json/groupsManager/removeMembers', {
+      group: group,
+      members: members
+    }, showNotificationOnError);
+  }
 }
diff --git a/libs/perun/services/src/lib/members.service.ts b/libs/perun/services/src/lib/members.service.ts
index faefa7d30..4b9f2499e 100644
--- a/libs/perun/services/src/lib/members.service.ts
+++ b/libs/perun/services/src/lib/members.service.ts
@@ -3,7 +3,7 @@ import {Observable} from 'rxjs';
 import {HttpParams} from '@angular/common/http';
 import { PERUN_API_SERVICE } from '@perun-web-apps/perun/tokens';
 import { PerunApiService } from './perun-api-service';
-import { Member, RichMember } from '@perun-web-apps/perun/models';
+import { Candidate, Group, Member, RichMember } from '@perun-web-apps/perun/models';
 
 @Injectable({
   providedIn: 'root'
@@ -76,13 +76,50 @@ export class MembersService {
     }, showNotificationOnError);
   }
 
-  addMember(voId: number, userId: number, showNotificationOnError = true): Observable<RichMember> {
+  createMember(voId: number, userId: number, showNotificationOnError = true): Observable<RichMember> {
     return this.apiService.post('json/membersManager/createMember', {
       vo: voId,
       user: userId
     }, showNotificationOnError);
   }
 
+  createMemberWithGroups(
+    voId: number,
+    userId: number,
+    groups: Group[],
+    showNotificationOnError = true
+  ): Observable<RichMember> {
+    return this.apiService.post('json/membersManager/createMember', {
+      vo: voId,
+      user: userId,
+      groups: groups
+    }, showNotificationOnError);
+  }
+
+  createMemberForCandidateWithGroups(
+    voId: number,
+    candidate: Candidate,
+    groups: Group[],
+    showNotificationOnError = true
+  ): Observable<RichMember> {
+    return this.apiService.post('json/membersManager/createMember', {
+      vo: voId,
+      candidate: candidate,
+      groups: groups
+    }, showNotificationOnError);
+  }
+
+  createMemberForCandidate(
+    voId: number,
+    candidate: Candidate,
+    showNotificationOnError = true
+  ): Observable<RichMember> {
+    return this.apiService.post('json/membersManager/createMember', {
+      vo: voId,
+      candidate: candidate
+    }, showNotificationOnError);
+  }
+
   getMemberByUser(voId: number, userId: number, showNotificationOnError = true): Observable<Member> {
     return this.apiService.post('json/membersManager/getMemberByUser', {
       'vo': voId,
diff --git a/libs/perun/services/src/lib/vo.service.ts b/libs/perun/services/src/lib/vo.service.ts
index ef9feebe1..94acf4fc3 100644
--- a/libs/perun/services/src/lib/vo.service.ts
+++ b/libs/perun/services/src/lib/vo.service.ts
@@ -26,13 +26,15 @@ export class VoService {
     return this.apiService.get(`json/vosManager/getVoById?id=${id}`, new HttpParams(), showNotificationOnError);
   }
 
-  getCompleteCandidates(voId: number, attrNames: string[], searchString: string,
+  getCompleteCandidates(id: number, entity : 'group' | 'vo', attrNames: string[], searchString: string,
                         showNotificationOnError = true): Observable<MemberCandidate[]> {
-    return this.apiService.post('json/vosManager/getCompleteCandidates', {
-      vo: voId,
+    const payload = {
       attrNames: attrNames,
       searchString: searchString
-    }, showNotificationOnError);
+    };
+    payload[entity] = id;
+
+    return this.apiService.post('json/vosManager/getCompleteCandidates', payload, showNotificationOnError);
   }
 
   removeVo(voId:number, force:boolean, showNotificationOnError = true): Observable<Vo> {