Hi, you can insert the 2nd roof on the same building location by using the roof by picking points tool. Then you can manually select the outline of the 2nd roof with the cursor. It won’t allow you to insert two auto roofs on the same building location because it can only follow one building’s perimeter wall outline per location. Another option would be to create a new building location under settings>building locations>add new, so you can insert walls and an auto roof together.