Guru: specify channel per group?

Haven’t been on the forum in a long time, hope this is in the right place!

I’m working on a definition for Guru. Everything is working fine but I need a way to specify what channel certain cc’s are sent over.
Can I set a channel for each group? Or section or even parameter if that’s what needs to happen.
The synth I’m using doesn’t use sysex and uses the same cc messages on channels 1-5 for similar parameters.