diff --git a/apps/web/src/app/admin-console/organizations/manage/group-add-edit.component.html b/apps/web/src/app/admin-console/organizations/manage/group-add-edit.component.html
index c6bfb94557..3afb816e14 100644
--- a/apps/web/src/app/admin-console/organizations/manage/group-add-edit.component.html
+++ b/apps/web/src/app/admin-console/organizations/manage/group-add-edit.component.html
@@ -31,7 +31,12 @@
         </bit-tab>
 
         <bit-tab label="{{ 'members' | i18n }}">
-          <p>{{ "editGroupMembersDesc" | i18n }}</p>
+          <p>
+            {{ "editGroupMembersDesc" | i18n }}
+            <span *ngIf="restrictGroupAccess$ | async">
+              {{ "restrictedGroupAccessDesc" | i18n }}
+            </span>
+          </p>
           <bit-access-selector
             formControlName="members"
             [items]="members"
diff --git a/apps/web/src/app/admin-console/organizations/manage/group-add-edit.component.ts b/apps/web/src/app/admin-console/organizations/manage/group-add-edit.component.ts
index 6d0f8e381f..dea6f4999b 100644
--- a/apps/web/src/app/admin-console/organizations/manage/group-add-edit.component.ts
+++ b/apps/web/src/app/admin-console/organizations/manage/group-add-edit.component.ts
@@ -1,15 +1,31 @@
 import { DIALOG_DATA, DialogConfig, DialogRef } from "@angular/cdk/dialog";
 import { ChangeDetectorRef, Component, Inject, OnDestroy, OnInit } from "@angular/core";
 import { FormBuilder, Validators } from "@angular/forms";
-import { catchError, combineLatest, from, map, of, Subject, switchMap, takeUntil } from "rxjs";
+import {
+  catchError,
+  combineLatest,
+  concatMap,
+  from,
+  map,
+  Observable,
+  of,
+  shareReplay,
+  Subject,
+  switchMap,
+  takeUntil,
+} from "rxjs";
 
 import { ApiService } from "@bitwarden/common/abstractions/api.service";
 import { OrganizationService } from "@bitwarden/common/admin-console/abstractions/organization/organization.service.abstraction";
 import { OrganizationUserService } from "@bitwarden/common/admin-console/abstractions/organization-user/organization-user.service";
+import { AccountService } from "@bitwarden/common/auth/abstractions/account.service";
+import { FeatureFlag } from "@bitwarden/common/enums/feature-flag.enum";
 import { ErrorResponse } from "@bitwarden/common/models/response/error.response";
+import { ConfigService } from "@bitwarden/common/platform/abstractions/config/config.service";
 import { I18nService } from "@bitwarden/common/platform/abstractions/i18n.service";
 import { LogService } from "@bitwarden/common/platform/abstractions/log.service";
 import { PlatformUtilsService } from "@bitwarden/common/platform/abstractions/platform-utils.service";
+import { UserId } from "@bitwarden/common/types/guid";
 import { CollectionService } from "@bitwarden/common/vault/abstractions/collection.service";
 import { CollectionData } from "@bitwarden/common/vault/models/data/collection.data";
 import { Collection } from "@bitwarden/common/vault/models/domain/collection";
@@ -88,10 +104,9 @@ export class GroupAddEditComponent implements OnInit, OnDestroy {
 
   tabIndex: GroupAddEditTabType;
   loading = true;
-  editMode = false;
   title: string;
   collections: AccessItemView[] = [];
-  members: AccessItemView[] = [];
+  members: Array<AccessItemView & { userId: UserId }> = [];
   group: GroupView;
 
   groupForm = this.formBuilder.group({
@@ -110,6 +125,10 @@ export class GroupAddEditComponent implements OnInit, OnDestroy {
     return this.params.organizationId;
   }
 
+  protected get editMode(): boolean {
+    return this.groupId != null;
+  }
+
   private destroy$ = new Subject<void>();
 
   private get orgCollections$() {
@@ -134,7 +153,7 @@ export class GroupAddEditComponent implements OnInit, OnDestroy {
     );
   }
 
-  private get orgMembers$() {
+  private get orgMembers$(): Observable<Array<AccessItemView & { userId: UserId }>> {
     return from(this.organizationUserService.getAllUsers(this.organizationId)).pipe(
       map((response) =>
         response.data.map((m) => ({
@@ -145,34 +164,55 @@ export class GroupAddEditComponent implements OnInit, OnDestroy {
           listName: m.name?.length > 0 ? `${m.name} (${m.email})` : m.email,
           labelName: m.name || m.email,
           status: m.status,
+          userId: m.userId as UserId,
         })),
       ),
     );
   }
 
-  private get groupDetails$() {
-    if (!this.editMode) {
-      return of(undefined);
-    }
-
-    return combineLatest([
-      this.groupService.get(this.organizationId, this.groupId),
-      this.apiService.getGroupUsers(this.organizationId, this.groupId),
-    ]).pipe(
-      map(([groupView, users]) => {
-        groupView.members = users;
-        return groupView;
-      }),
-      catchError((e: unknown) => {
-        if (e instanceof ErrorResponse) {
-          this.logService.error(e.message);
-        } else {
-          this.logService.error(e.toString());
-        }
+  private groupDetails$: Observable<GroupView | undefined> = of(this.editMode).pipe(
+    concatMap((editMode) => {
+      if (!editMode) {
         return of(undefined);
-      }),
-    );
-  }
+      }
+
+      return combineLatest([
+        this.groupService.get(this.organizationId, this.groupId),
+        this.apiService.getGroupUsers(this.organizationId, this.groupId),
+      ]).pipe(
+        map(([groupView, users]) => {
+          groupView.members = users;
+          return groupView;
+        }),
+        catchError((e: unknown) => {
+          if (e instanceof ErrorResponse) {
+            this.logService.error(e.message);
+          } else {
+            this.logService.error(e.toString());
+          }
+          return of(undefined);
+        }),
+      );
+    }),
+    shareReplay({ refCount: false }),
+  );
+
+  restrictGroupAccess$ = combineLatest([
+    this.organizationService.get$(this.organizationId),
+    this.configService.getFeatureFlag$(FeatureFlag.FlexibleCollectionsV1),
+    this.groupDetails$,
+  ]).pipe(
+    map(
+      ([organization, flexibleCollectionsV1Enabled, group]) =>
+        // Feature flag conditionals
+        flexibleCollectionsV1Enabled &&
+        organization.flexibleCollections &&
+        // Business logic conditionals
+        !organization.allowAdminAccessToAllCollectionItems &&
+        group !== undefined,
+    ),
+    shareReplay({ refCount: true, bufferSize: 1 }),
+  );
 
   constructor(
     @Inject(DIALOG_DATA) private params: GroupAddEditDialogParams,
@@ -188,17 +228,25 @@ export class GroupAddEditComponent implements OnInit, OnDestroy {
     private changeDetectorRef: ChangeDetectorRef,
     private dialogService: DialogService,
     private organizationService: OrganizationService,
+    private configService: ConfigService,
+    private accountService: AccountService,
   ) {
     this.tabIndex = params.initialTab ?? GroupAddEditTabType.Info;
   }
 
   ngOnInit() {
-    this.editMode = this.loading = this.groupId != null;
+    this.loading = true;
     this.title = this.i18nService.t(this.editMode ? "editGroup" : "newGroup");
 
-    combineLatest([this.orgCollections$, this.orgMembers$, this.groupDetails$])
+    combineLatest([
+      this.orgCollections$,
+      this.orgMembers$,
+      this.groupDetails$,
+      this.restrictGroupAccess$,
+      this.accountService.activeAccount$,
+    ])
       .pipe(takeUntil(this.destroy$))
-      .subscribe(([collections, members, group]) => {
+      .subscribe(([collections, members, group, restrictGroupAccess, activeAccount]) => {
         this.collections = collections;
         this.members = members;
         this.group = group;
@@ -224,6 +272,18 @@ export class GroupAddEditComponent implements OnInit, OnDestroy {
           });
         }
 
+        // If the current user is not already in the group and cannot add themselves, remove them from the list
+        if (restrictGroupAccess) {
+          const organizationUserId = this.members.find((m) => m.userId === activeAccount.id).id;
+          const isAlreadyInGroup = this.groupForm.value.members.some(
+            (m) => m.id === organizationUserId,
+          );
+
+          if (!isAlreadyInGroup) {
+            this.members = this.members.filter((m) => m.id !== organizationUserId);
+          }
+        }
+
         this.loading = false;
       });
   }
diff --git a/apps/web/src/locales/en/messages.json b/apps/web/src/locales/en/messages.json
index f28bff066a..a3fc234cab 100644
--- a/apps/web/src/locales/en/messages.json
+++ b/apps/web/src/locales/en/messages.json
@@ -7905,5 +7905,8 @@
   },
   "unassignedItemsBannerSelfHost": {
     "message": "Notice: On May 2, 2024, unassigned organization items will no longer be visible in your All Vaults view across devices and will only be accessible via the Admin Console. Assign these items to a collection from the Admin Console to make them visible."
+  },
+  "restrictedGroupAccessDesc": {
+    "message": "You cannot add yourself to a group."
   }
 }
diff --git a/libs/common/src/abstractions/api.service.ts b/libs/common/src/abstractions/api.service.ts
index 6962a44268..44a58403ed 100644
--- a/libs/common/src/abstractions/api.service.ts
+++ b/libs/common/src/abstractions/api.service.ts
@@ -297,7 +297,6 @@ export abstract class ApiService {
   ) => Promise<any>;
 
   getGroupUsers: (organizationId: string, id: string) => Promise<string[]>;
-  putGroupUsers: (organizationId: string, id: string, request: string[]) => Promise<any>;
   deleteGroupUser: (organizationId: string, id: string, organizationUserId: string) => Promise<any>;
 
   getSync: () => Promise<SyncResponse>;
diff --git a/libs/common/src/services/api.service.ts b/libs/common/src/services/api.service.ts
index c7a8f3f091..90671c4f04 100644
--- a/libs/common/src/services/api.service.ts
+++ b/libs/common/src/services/api.service.ts
@@ -866,16 +866,6 @@ export class ApiService implements ApiServiceAbstraction {
     return r;
   }
 
-  async putGroupUsers(organizationId: string, id: string, request: string[]): Promise<any> {
-    await this.send(
-      "PUT",
-      "/organizations/" + organizationId + "/groups/" + id + "/users",
-      request,
-      true,
-      false,
-    );
-  }
-
   deleteGroupUser(organizationId: string, id: string, organizationUserId: string): Promise<any> {
     return this.send(
       "DELETE",