Zones can be used to visualize zones with different uses. What zones are visible in the building depends on the customer's intended use.
In the info panel drop-down menu on the right, you can choose which scopes to view.
You can view zone scopes per layer, and the layer menu on the left also indicates if the zone extends to more than one layer.
From the three-dot icon next to the zone type, you can open the drop-down menu with more, edit, and delete actions.