Renovation to add Exterior Walkout staircase and foundation

[Darren-Cambridge]

Good Day -NewBee here

Seeking good practices or direction to video that helps with this build.

 

I wish to use ICF to form an exterior three walls with staircase up to graded landscape from my basement. no over head roof/cover

I have drawing a simple two store house with full basement (8" concrete conventional formed walls) and landscaped back yard so top 3ft of foundation wall is exposed.

 

Then I went back to add on a 3 sided ICF foundation extension rectangle with poured floor.

 

Issues:

• the auto roof covered the new foundation
• I deleted roof and the foundation extended to the soffit width of main floor roof.? Can't seem to delete this totally?
• My landscape grass shows inside of new foundation area?
• my three walls with footing are only 48" tall. How do i get to "Floor defaults" or "Room" dimension widow to set all three walls to equal or lower than house footing?

 

[solver]

A picture (screen capture) or 2 will help others see what you see.