Where are IO rotation functions found?

Need to cycle through inputs and outputs. I realise the LOM has input/sub input, output/sub output but even just sub output would be ok for now
eg When playing, sometimes you want to flick a subgroup direct to master output so it can stay focused in foreground whilst the subgrouped stuff is filtered/lowered/blurred etc…Bokeh for audio I guess 🙂

Cheers