I need to know how to setup the buttons shortcuts...
for example fill button we click on Alt F9 ... find button Alt F8...
for the Apply Template button (interaction)... what is the shortcut... & can we modify it?
You can only use as much as you have Function keys on your key board which are 12 only, form F1 to F12.
So here, feels you can try for F12 because it is not in use but not sure whether is supposed to work or not as some of them could be reserved for generic OS functionality.
Or you can go change GUI option of template button to '11'. This F11 which use in move to previous record in list of Incidents using arrow button (previous), and not so popular and known. But must be aware if users use it or not.