Hello, at a high level you create an AP Group (template) and then on the device configuration page, you apply that AP group to the device. This link goes into more detail regarding creating the AP Group. http://community.cambiumnetworks.com/t5/cnMaestro/AP-Groups-and-Overrides-for-Wi-Fi-devices/m-p/71173#M58
For mesh, you will setup a specific mesh SSID and then you will have a configuration for the base (root) AP(s) and the mesh (non-root) AP(s). This link goes into more detail. http://community.cambiumnetworks.com/t5/cnPilot-E-Series-Enterprise-APs/How-do-I-setup-a-wireless-mesh-repeater-mode/m-p/52498#M15
and more info: