You can work with zones in a project while linking to a model.
See Linked Models.
- You must specify the linked model as room-bounding to be able to place spaces and create zones in the host (local) file. This property is off by default.
- All zones and spaces in the MEP project must be in the host (local) file and not in the linked model.
- The phase of the zone must match or correspond (if it has a different phase name) to the phase of the space.