Before you can add FortiGate devices to FortiWLM MEA, you may add them to FortiManager. Because FortiWLM MEA supports the ADOM, add the devices to the ADOM.
It is recommended to add FortiGate as model devices to control the order of configuration installation. You want to install the FortiWLM MEA configuration before the firewall configuration.
For details about adding model devices to FortiManager, see the FortiManager Administration Guide.