I did use the help system and you tube and, as I noted, the drop down for specifying another floor would not appear. I tried your suggestion of creating a simple plan and then adding a floor but the program will not respond when I try to open or create a New Plan. I can only save the one I am in under a new name and delete all then draw a simple plan and it will not create a second floor.
I will reach out to Chief tomorrow.
Thanks for your help