A new video has just been posted to YouTube and is in the play list on the “Videos” page her on the site covering how to tweak the MAME UI to re-map the “PAUSE” key making it not P, and how to custom map a few CoCo-Specific keys within the emulator such as the “Break”, “Clear” and @ keys to where you’d like them on your personal keyboard.
This also covers some CoCo-Pi specific steps like backing up the configs in advance from the utility menu and toggling the ability to for user-defined changes.