Outbuidling Help

[Adam]

I have my house totally completed with landscaping and countours. I now am trying to add a 30'x24' outbuilding separate from the house. After I draw in the exterior walls and interior walls, I try to add a foundation using the "Floor Tools" parent button but the "Build Foundation" child button can not be clicked (i.e., it is transparent/faded into the tool bar). Also, it seems like my foundation-less out building is related to the main house as it is hovering in mid-air at the same elevation as the house's first floor. How can create this separate building and add a foundation? I am using Home Designer Suite version 7.0. Thanks!