What’s New in FortiManager v5.0 GA : Other improvements : Single interface zones
 
Single interface zones
An extension to the Global Zone feature, Single Interface zones are designed to minimize user errors during setup for handling Virtual IP configurations, and other.
This feature has two parts:
For each Global Zone, there is an option for a Single Interface Zone
When defining a Virtual IP, any type of global zone can be selected as mapping.
When Single Interface Zone is selected, the FortiManager can simply install configurations directly to the FortiGate without the need to create a new zone on FortiGate side.
If a non-single-interface zone is selected, then the user will need to create a mapping for a Dynamic Virtual IP on the FortiGate device.