I have a large building and I want to have ICF's off the front to allow for stairs to go down to level 0 and ultimately decks that will be supported on top of the ICF's for level 1. I have tried changing room types, but nothing seems to get rid of the terrain in this area. Also, when I build a deck, the ICF walls raise up to meet the underside of the deck, at least sometimes. I imagine it is something easy I am missing, but I can't locate it. Thanks for your time!