After unplacing a room, you can place the room in another location of the building model. 
-  Open a plan view where you want to place the room. 
 
- Click Architecture tab
Room & Area panel
 (Room).  
- On the Options Bar, for Room, select the desired room from the list. 
 
- In the drawing area, click to place the selected room in the desired location. 
Room schedules update automatically to reflect the new location of the room.