Assistance requested adding an "index/jog" button to AXIS

I have the same lathe and turret as shown in the video link below and have the hardware configured the same way.

I have set up the hal file and clp file the same way as in the video.
I would like to add jog button into AXIS to simplify homing the tool turret on start up.

What would be the best way to go about doing this?

From what I have read the are 3-4 ways to do this.
Edit axis.py and axis.tcl, A usercommand file, remapping M6 or another gcode, or a special window using pyvcp.

I would like to get pointed in the right direction before I start reinventing the wheel here. If I edit axis directly I assume I'll need to edit files in at least 3 different locations.

Thank you for your time and assistance.

 

I have looked into both the carousel component and the other boxford/emco turrets, all 3 options involve using a encoder or limit switch which I am trying to avoid at the moment. if push comes to shove i will cobble together a home switch of some sort but would like to avoid that for now.