I am have trouble with this design, any advice would be appreciated. I have searched the help videos and can't find anything on this application,  here is what I am trying to do. 
I have attached a picture.... 
8' walls on upper story
2' step up where the dormer goes
dormer flush with the lower wall
NO ROOF plane in front of the dormer
Thanks, 
rb 
  
ps I am doing this with the  auto floating tool