Touch Plate Explanation please

I gave up. Back to the roll up fag paper, that's advanced technology

I hate getting beat so I came back as it did work, so no reason why it should not work again. I have gone through the configuration several times but just not getting there. I have the touch button displayed and it does appear to operate. I assume that when activated is should start the "MDI" commands but nothing happens? Am I missing something in the "Advanced Configuration Options"?
I am very much a senior citizen(76) and finding my mind is not as sharp as it used to be so help is appreciated.

Gmoccapy goes it's own way where touch plates are concerned, but it is documented:

linuxcnc.org/docs/2.8/html/gui/gmoccapy....uto-tool-measurement

I haven't read back through all 5 pages to see if that link has already been posted. If it has, then sorry.

Andy, I thank you for your reply. I have looked at the link you have provided and attempted numerous "fixes" to no avail.
My initial probe problem was resolve at page 3 by ACIERA who provided a INI file and Gladevcp folder which resolved the problem. However I attempt to replicate the installation and am not making any progress. The touch button appears to work but does not activate the MDI commands although I can enter them manually. Not sure where I should be looking so any direction would be much appreciated.