The IndoorAP is completely self-configuring - there is no way to manually configure it. It gets all its configuration information from AyrMesh.com - it automatically uses the same SSID (network name) as your Hubs, but with "_IndoorAP" appended. For instance, if you leave the default SSID (AyrMesh), the SSID of the IndoorAP will be "AyrMesh_IndoorAP"
The Channel will automatically be set to 5 channels above the Hub (if the Hub is set above channel 6, the channel will "wrap around" to 1-5).
The Encryption Passkey will be the same as the one set for the Hubs.