I was able to enable the audio control switches using Focccus since it populated the various settings for the central config. I'm not sure what you need to do with forscan so that settings appear for options that aren't in the cars as_built data. Oddly enough the audio controls that were enabled are the controls on the steering wheel and not the buttons on the airbag. Don't care as long as the functionality is there :)
The last task I'm hoping to enable is the trunk pop button in the headlight switch. I don't see any threads anywhere about this but I can't imagine I'm the only person looking to do this. Anyhow, if anyone has any insight on the trunk release function for a headlight switch assembly, I'd appreciate it.