Create a new Wall Type by duplicating the existing Generic 4" Brick wall type and name the new wall type "Brick + GWB"
Edit the structure of this new wall type to add a 1/2" thick Finish layer of the material named "Gypsum Wall Board" to the finish side.
Use this sketch of a floor plan to add elements to the existing building:
• Add Walls
• Add Doors
• Create rooms based on the labels in the floor plan sketch