CassieSkaggs

I need the ceiling below to slope. The roof above only has it's normal gable slope.

I have a ceiling I'm trying to model on the underside of a porch cover. It will have scissor trusses that will reduce as they move out. There is a vault in the middle (so 2 plans, one each side). Slopes: 1) Following the peak 2) Following the ascending truss bottom Is there a way to do this? Thanks!