In my sample code all the camera properties are in the compcamerarig object. Look in my original tutorial here
this should start where the compcamerarig is shown. The location and rotation of the camera component is the offset from the VIVE tracker to the camera. In my setup the VIVE is on a 6" bolt attached to the same mount plate as the camera. So the VIVE is behind and above the camera and has the USB plug facing the rear.
Let me know if this doesn’t answer your question.