Pncconf qtplasmac

hello!
I'm in the process of assembling my plasma cutting machine with qtplasmac with 7i76e table interface! I need help to insert a button for the cut simulation in the GUI, can someone help me?
I saw that there is a configuration in pncconfig but I couldn't develop.

To simulate a cut you can leave the torch disabled and run the g-code file with CYCLE START.

Info on custom buttons:
linuxcnc.org/docs/devel/html/plasma/qtpl..._custom-user-buttons
 

OK Phillc ! grateful for the help