diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.html b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.html
index 04bca401..42000cb5 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.html
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.html
@@ -77,80 +77,85 @@
                 <i class="mid mid-24 mdi-account-multiple"></i>
               </button>
             </ng-template>
-            <div class="mat-tab-frame dialog-tab-grouplist">
-              <div>
-                <ucap-organization-tenant-search
-                  [companyList]="companyList$ | async"
-                  [companyCode]="companyCode"
-                  (keyDownEnter)="
-                    onKeyDownEnterOrganizationTenantSearch($event)
-                  "
-                  (cancel)="onClickCancel()"
-                ></ucap-organization-tenant-search>
-              </div>
-              <div
-                [style.display]="isShowSearch ? 'none' : 'block'"
-                class="group"
-              >
-                <ucap-group-expansion-panel
-                  #groupExpansionPanel
-                  [groupBuddyList]="groupBuddyList$ | async"
-                  [selectedUserList]="selectedUserList"
-                  [ignoreUserList]="data.curRoomUser"
-                  [checkable]="true"
-                  (checkGroup)="onCheckGroup($event)"
-                  class="group-expansion"
+            <div fxFlexFill>
+              <div class="mat-tab-frame dialog-tab-grouplist">
+                <div>
+                  <ucap-organization-tenant-search
+                    [companyList]="companyList$ | async"
+                    [companyCode]="companyCode"
+                    (keyDownEnter)="
+                      onKeyDownEnterOrganizationTenantSearch($event)
+                    "
+                    (cancel)="onClickCancel()"
+                  ></ucap-organization-tenant-search>
+                </div>
+                <div
+                  [style.display]="isShowSearch ? 'none' : 'block'"
+                  class="group"
                 >
+                  <ucap-group-expansion-panel
+                    #groupExpansionPanel
+                    [groupBuddyList]="groupBuddyList$ | async"
+                    [selectedUserList]="selectedUserList"
+                    [ignoreUserList]="data.curRoomUser"
+                    [checkable]="true"
+                    (checkGroup)="onCheckGroup($event)"
+                    class="group-expansion"
+                  >
+                    <ucap-profile-user-list-item
+                      *ucapGroupExpansionPanelItem="let userInfo"
+                      [userInfo]="userInfo"
+                      [showPresence]="false"
+                      [sessionVerinfo]="sessionVerinfo"
+                      [selectedUserList]="selectedUserList"
+                      [isChecked]="getCheckedUser(userInfo)"
+                      [checkable]="true"
+                      [checkDisabled]="!getCheckableUser(userInfo)"
+                      (checkUser)="onCheckUser($event)"
+                      (click)="onToggleUser(userInfo)"
+                      class="group-list-item"
+                    >
+                    </ucap-profile-user-list-item>
+                  </ucap-group-expansion-panel>
+                </div>
+                <div
+                  [style.display]="isShowSearch ? 'block' : 'none'"
+                  class="search-result"
+                >
+                  <div style="position: relative;">
+                    <div
+                      *ngIf="searchProcessing"
+                      style="position: absolute; width: 100%;"
+                    >
+                      <mat-progress-bar mode="indeterminate"></mat-progress-bar>
+                    </div>
+                  </div>
+
+                  <div class="result-num">
+                    {{ 'common.searchResult' | translate }}
+                    <span class="text-accent-color">
+                      ({{ searchUserInfos.length
+                      }}{{ 'common.units.persons' | translate }})
+                    </span>
+                  </div>
                   <ucap-profile-user-list-item
-                    *ucapGroupExpansionPanelItem="let userInfo"
+                    *ngFor="let userInfo of searchUserInfos"
                     [userInfo]="userInfo"
                     [showPresence]="false"
                     [sessionVerinfo]="sessionVerinfo"
                     [selectedUserList]="selectedUserList"
                     [isChecked]="getCheckedUser(userInfo)"
-                    [checkable]="true"
+                    [checkable]="userInfo.seq !== loginRes.userSeq"
                     [checkDisabled]="!getCheckableUser(userInfo)"
                     (checkUser)="onCheckUser($event)"
                     (click)="onToggleUser(userInfo)"
-                    class="group-list-item"
                   >
                   </ucap-profile-user-list-item>
-                </ucap-group-expansion-panel>
-              </div>
-              <div
-                [style.display]="isShowSearch ? 'block' : 'none'"
-                class="search-result"
-              >
-                <div style="position: relative;">
-                  <div
-                    *ngIf="searchProcessing"
-                    style="position: absolute; width: 100%;"
-                  >
-                    <mat-progress-bar mode="indeterminate"></mat-progress-bar>
-                  </div>
                 </div>
-
-                <div class="result-num">
-                  {{ 'common.searchResult' | translate }}
-                  <span class="text-accent-color">
-                    ({{ searchUserInfos.length
-                    }}{{ 'common.units.persons' | translate }})
-                  </span>
-                </div>
-                <ucap-profile-user-list-item
-                  *ngFor="let userInfo of searchUserInfos"
-                  [userInfo]="userInfo"
-                  [showPresence]="false"
-                  [sessionVerinfo]="sessionVerinfo"
-                  [selectedUserList]="selectedUserList"
-                  [isChecked]="getCheckedUser(userInfo)"
-                  [checkable]="userInfo.seq !== loginRes.userSeq"
-                  [checkDisabled]="!getCheckableUser(userInfo)"
-                  (checkUser)="onCheckUser($event)"
-                  (click)="onToggleUser(userInfo)"
-                >
-                </ucap-profile-user-list-item>
               </div>
+              <ng-template
+                [ngTemplateOutlet]="selectedUserListTemplate"
+              ></ng-template>
             </div>
           </mat-tab>
           <mat-tab>
@@ -159,19 +164,24 @@
                 <i class="mid mid-24 mdi-file-tree"></i>
               </button>
             </ng-template>
-            <div class="mat-tab-frame dialog-tab-orglist">
-              <app-layout-chat-left-sidenav-organization
-                [showTitle]="false"
-                [selectedUserList]="selectedUserList"
-                [ignoreUserList]="data.curRoomUser"
-                [isUserSelect]="true"
-                [isVisible]="currentTabIndex === 1"
-                (checkAllUser)="onCheckAllUser($event)"
-                (checkUser)="onCheckUser($event)"
-                (toggleUser)="onToggleUser($event)"
-                class="oraganization"
-              >
-              </app-layout-chat-left-sidenav-organization>
+            <div fxFlexFill>
+              <div class="mat-tab-frame dialog-tab-orglist">
+                <app-layout-chat-left-sidenav-organization
+                  [showTitle]="false"
+                  [selectedUserList]="selectedUserList"
+                  [ignoreUserList]="data.curRoomUser"
+                  [isUserSelect]="true"
+                  [isVisible]="currentTabIndex === 1"
+                  (checkAllUser)="onCheckAllUser($event)"
+                  (checkUser)="onCheckUser($event)"
+                  (toggleUser)="onToggleUser($event)"
+                  class="oraganization"
+                >
+                </app-layout-chat-left-sidenav-organization>
+              </div>
+              <ng-template
+                [ngTemplateOutlet]="selectedUserListTemplate"
+              ></ng-template>
             </div>
           </mat-tab>
           <mat-tab *ngIf="data.type === UserSelectDialogType.MessageForward">
@@ -183,44 +193,27 @@
                 ><i class="mid mid-24 mdi-chat"></i>
               </mat-icon>
             </ng-template>
-            <div class="mat-tab-frame dialog-tab-chatlist">
-              <ucap-room-list-item
-                *ngFor="let room of roomList"
-                [loginRes]="loginRes"
-                [roomInfo]="room"
-                [roomUserInfo]="getRoomUserList(room)"
-                [sessionVerinfo]="sessionVerinfo"
-                [checkable]="getCheckableRoom(room)"
-                [isChecked]="getCheckedRoom(room)"
-                [multiCheckable]="false"
-                (checkRoom)="onCheckRoom($event)"
-                (click)="onToggleRoom(room)"
-                class="chat"
-              >
-              </ucap-room-list-item>
+            <div fxFlexFill style="max-height: 508px;">
+              <div class="mat-tab-frame dialog-tab-chatlist">
+                <ucap-room-list-item
+                  *ngFor="let room of roomList"
+                  [loginRes]="loginRes"
+                  [roomInfo]="room"
+                  [roomUserInfo]="getRoomUserList(room)"
+                  [sessionVerinfo]="sessionVerinfo"
+                  [checkable]="getCheckableRoom(room)"
+                  [isChecked]="getCheckedRoom(room)"
+                  [multiCheckable]="false"
+                  (checkRoom)="onCheckRoom($event)"
+                  (click)="onToggleRoom(room)"
+                  class="chat"
+                >
+                </ucap-room-list-item>
+              </div>
             </div>
           </mat-tab>
         </mat-tab-group>
-
-      <div *ngIf="isShowSelectedUserList" class="list-chip">
-        <mat-chip-list aria-label="User selection">
-          <mat-chip
-            *ngFor="let userInfo of selectedUserList"
-            [selected]="getChipsRemoveYn(userInfo)"
-            (removed)="onClickDeleteUser(userInfo)"
-          >
-            {{ userInfo.name }}
-            <mat-icon matChipRemove *ngIf="getChipsRemoveYn(userInfo)"
-              >clear</mat-icon
-            >
-          </mat-chip>
-        </mat-chip-list>
       </div>
-      <span *ngIf="isShowSelectedUserList"
-        >{{ selectedUserList.length }}
-        {{ 'common.units.persons' | translate }}</span
-      >
-    </div>
     </div>
   </mat-card-content>
   <mat-card-actions class="button-farm flex-row">
@@ -241,3 +234,24 @@
     </button>
   </mat-card-actions>
 </mat-card>
+
+<ng-template #selectedUserListTemplate>
+  <div class="list-chip">
+    <mat-chip-list aria-label="User selection">
+      <mat-chip
+        *ngFor="let userInfo of selectedUserList"
+        [selected]="getChipsRemoveYn(userInfo)"
+        (removed)="onClickDeleteUser(userInfo)"
+      >
+        {{ userInfo.name }}
+        <mat-icon matChipRemove *ngIf="getChipsRemoveYn(userInfo)"
+          >clear</mat-icon
+        >
+      </mat-chip>
+    </mat-chip-list>
+  </div>
+  <span>
+    {{ selectedUserList.length }}
+    {{ 'common.units.persons' | translate }}
+  </span>
+</ng-template>
diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.ts b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.ts
index dab108e2..a51cb7be 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.ts
@@ -185,7 +185,7 @@ export class CreateChatDialogComponent implements OnInit, OnDestroy {
     | UserInfoDN
     | RoomUserInfo
   )[] = [];
-  isShowSelectedUserList = true;
+
   selectedRoom: RoomInfo;
 
   inputForm: FormGroup;
@@ -399,10 +399,8 @@ export class CreateChatDialogComponent implements OnInit, OnDestroy {
 
     if (tabChangeEvent.index === 2) {
       this.selectedUserList = [];
-      this.isShowSelectedUserList = false;
     } else {
       this.selectedRoom = null;
-      this.isShowSelectedUserList = true;
     }
   }