Bc2000 (for the BCF2000 & BCR2000)

I'd like the group select buttons to send MIDI cc. Is this possible? While they also still work as group select? I'm using all four groups, and I want to send a cc when I select group, so the software - Plogue Bidule - can route the signals differently depending on which group I'm viewing.

I tried assigning standard output and custom output using BC Manager, with no luck so far.

I think I have seen a layout that used group 3 and 4, but perhaps only two groups were used...