adding crown moulding to multiple cabinets

[57grandpa]

I can select multiple cabinets using the ctrl key, but it will not let me open the objects after I have selected them(I tried using ctrl-E to open them)

I do have the ability to add crown moulding in Interior Designer'

When I select only one cabinet, there is an icon on the sidebar to open the object, but whe I select multiple cabinets, the "open object" icon disappears, so it looks like there is not a way to open multiple objects unless I upgrade to Pro.