Zones in 3D

You can display the zone volumes in 3D view as follows.

Example: Display 1st floor zone structure

Steps: 

1. Switch ON the Transparency with wireframe option 

2. Build 3D model in Custom mode selecting the 1st floor only.

3. Select - View - Build 3D - Space volume computation

Select Show zone volumes

Specify zone group colors

Select View - Visual styles - Consistent color 

You will get a result similar to the figure below: