Now that you have a Building setup, the next step is to create some Floor plans (ie., 1 bedroom or A22, etc). Regardless of your naming convention the idea is that you will create the various floorplans first, and then assign UNITS to each floor plan.
To add a floor plan GO TO: PROPERTIES --> BUILDINGS --> Select the Building in Question.
Next, click on FLOORPLANS Tab and then the + NEW FLOORPLAN
Complete the Floorplan Information. Click SAVE to save your newly created floorplan.
You can have multiple floorplans that will be linked to each of your units. Each floorplan can have its own amenities and you can also note the actual floorplan sizes as well.
The next step is to create the units HERE