Chapter 1 What’s New for FortiOS 5.0 : FortiOS and BYOD : Device monitoring : Creating a custom device group
  
Creating a custom device group
The predefined device groups are automatically populated. When you create a custom device group, you choose the members. Adding a device that the FortiGate unit has already detected is easiest. But you can also add a device that has not yet been detected if you know its MAC address.
To create the custom device group
1. Go to User & Device > Device > Device Groups and select Create New.
2. Enter a name for the group.
3. Add devices to the group.
4. Select OK.