Custom Box Window

[kwhitt]

I need to create a box window that is raised off the floor 2' without any foundation below.  The box window doesn't seem to allow me to add additional windows along the front wall (I need three), so am trying to create my own walls by inserting an invisible wall at the projection point to create a room.  When I raise the floor, there is a gap in the wall below (see attached image).  How is this supposed to be done?  Is it possible to use the box window tool and add additional windows to the face?  Thanks, Kevin

[kwhitt]

Thanks Eric.  That did the trick!