For instance, you want to put a kitchen and a person in a specific room, you make sure that the floor is turned on, place your person and or other objects, get your camera shot ready, then make the walls visible again and there you go.....don't try to manipulate through the walls with the camera, that is timely and can be aggrevating. You really have to have the ability to make walls invisiable during the time of placement of objects or people, that is why you can make our walls invisible. Sharen