Howdy Whack and welcome to the forums!

you can set the override key to whatever hotkey you want. go to keyclone/ setup/ override settings.. find which override you want to adjust, click in the region to the right of the description... and hit a key

by default, general override is defaulted to PAUSE (pause/break button in the upper right of most keyboards)

personally, i set the DNP override to CTRL+PAUSE (which shows up as CTRL+CANCEL)

also, to trigger the override, you must be on one of the managed screens (in a wow window).

let me know if that helps.