This seems like a stupid question but I'm stumped. I cannot seem to change the shortcut key for the Mate function. It is set for J but I'd like to set it somewhere else. I am using 2019.I have looked through every command on the keyboard tab for the customize menu. All the drop downs are set to all commands. I cannot find it. Are there some commands that have assigned hotkeys that cannot be changed?
My guess... An assembly is not the active document. Insert Mate will only show up in the keyboard list if you're in an assembly.