Live 3D lets you take an interactive 3D walkthrough of your project, either from above or inside. Live 3D works on a level-by-level basis, allowing you to view one level/floor at a time. You can view your entire house in Live 3D by switching levels. 

To switch between levels/floors in Live 3D

1. In the RoomSketcher App, click the Level  button and open a level.
2. Click the 3D button in the top toolbar. 
3. Optional: If you have a larger monitor, place the RoomSketcher App and the Live 3D windows side-by-side so that you can see both at the same time.
   
   
   
   
4. Click the Levels button on the toolbar and open another level. Live 3D switches to the selected level.