diff --git a/app/src/main/java/org/ntlab/irisclient/viewmodels/RoomViewModel.java b/app/src/main/java/org/ntlab/irisclient/viewmodels/RoomViewModel.java
index f2ba744..480e7c8 100644
--- a/app/src/main/java/org/ntlab/irisclient/viewmodels/RoomViewModel.java
+++ b/app/src/main/java/org/ntlab/irisclient/viewmodels/RoomViewModel.java
@@ -59,6 +59,26 @@
     }
 
     //-----------------------------------------------------------------------------
+    //Activityでのボタン処理
+    //チーム&マスター変更
+    public void changeTeamAndMaster(String rid,String nickname,String belongs,Boolean isMaster) {
+        final RoomsRest roomsRest = retrofit.create(RoomsRest.class);
+        Call<RoomJson> call = roomsRest.putMember(rid,nickname,belongs,isMaster);
+
+        call.enqueue(new Callback<RoomJson>() {
+            @Override
+            public void onResponse(Call<RoomJson> call, Response<RoomJson> response) {
+                if (response.isSuccessful()){
+                    
+                }
+            }
+            @Override
+            public void onFailure(Call<RoomJson> call, Throwable t) {
+            }
+        });
+    }
+
+    //-----------------------------------------------------------------------------
     // updates
     @Override
     public void update(){