I'm new to this and I've been trying to help a friend in re-creating a single storey building that has a main structure and then a lean-to at the rear. I'd like to be able allow the main structure to have walls of one height and the lean-to wall to be lower so that the roof can continue seamlessly. It should also be noted that there is no wall between the two structures. I cannot seem to find anywhere that allows me to set each wall height individually.
I hope that I've managed to make my problem clear.
All help appreciated great, thanks,