There's no software support for a 6-position switch, though you could certainly wire in something that just created six fixed positions. Ditto for using a pot with a center indent of some sort.
The voice alerts test build (see
deviationtx.com/forum/builds/5089-voice-alerts-test-build
) includes a "beep" mixer type that lets you cause a channel to beep (or, if you've added the audio player, play an audio file) at any given value, like when it's centered.