Remote device RTZ or End of audio

I have successfully gotten the Alphatrack set up as a remote device for play, stop and record. While there is a move forward or backward in the Transport options in the setup for the remote device, I don’t see any way to RTZ or move to beginning of file, or end of file, which I would like to use the Shift << and Shift >> functions for on the controller.

Is there another way to implement this with an external controller?