Modify room option is not available - why?

[chsandahl]

I created a room so I could be certain the furniture I designed will work as I want it to - great program, very user friendly. I just want to add a floor to it, but the "modify room" option is not available, not matter what I do. What am I missing here? Thanks!

[hansmex]

I suggest you start reading the manual here ....
If you still have questions, feel free to ask again.

H