I have this camera duo on a Losmandy G11. It works just like any other guide camera in that it doesn't control the mount any differently. On Windows, anyway, there are two imaging devices, the main camera and the guide camera. In PHD2 you would select the guide camera. On my mount, I have PHD2 control the mount via Ethernet or USB, it'll do either, and I use ASCOM. On the CGEM you'd probably need to use USB through the hand controller from the computer since the camera has no ST-4 output. And likely with ASCOM.