Probe Screen - How To?

Like the vast majority of Linux configurations, probe screen V2 by ver.by doesn’t really give a lot of info on workflow.

I want to set up a corner finder touch plate. I’ve got it wired to my input, I’ve got probe screen working in my LCNC GUI, but I can’t figure out how to actually get the corner probe to work. 

Is there some kind of workflow walkthrough I’m missing?

Hi,

Maybe start using some basic mdi gcode commands to perform a probe.
Is there a python file where the probe script can be read?