Hi John Deligdisch,

The trick for the crown moldings in cabinets is the insertion of a piece of wall (say H= 1") and add the molding (trim--> crown molding)

As for the soffits, you can build them as 3D workshop objects and move them to other tab (say the landscape tab).
Step 1: draw the soffit--> Move to plan--> (floor, landscape, etc)
Step 2: Select different colors for each tab (Options --> screen colors)
Step 3: If you are working in / printing from the floor tab (or electrical, etc), you will see a small black arrow at the right of the name. By clicking the small arrow you have the option of viewing or hiding other tabs. Just check the names of the tabs you wish to show (where you moved the circuits). See the image attached.

Hope this helps

Patricia