According to the wiki, I can upload a floor plan.
" Create sections by clicking the “Advanced” tab and choosing the sub-tab “Sections”. You can create a floorplan for each section using your favorite paint or draw program and upload them to Vera on that page. You can also position the devices on the floorplan. "
Unfortunately, either I’m too old 
or there is no good documentation anywhere on this topic. Anything I try gives me the error " Attempted to send content larger than allowed limits. ".
Anyone out there have any idea how to use this feature?