First, you should write down the device's serial number and make note of any inputs (DPS/REX).
This will take you to the ACS page. From here, click Add Controller.
In the window that appears, fill in controller type, serial number, name, and location.
Click 'Create' and allow the controller to go through the detect configuration process.
When complete, the loading bar will disappear and the cloud icon will turn green.
Add any REX buttons or door sensors (DPS) in prospective door’s Door Settings.
If detect configuration loading bar never finishes, check your ethernet connection and then contact support.