You can set an R3 split point so that R1&2 would sound to the left of the split point while R3 would sound to the right of it.
I was under the impression that you could layer 3 voices on the right hand, but, unless I am doing something wrong, I don’t that is possible on the Genos. In other words, if I set R1 and R2 at C3, and also set R3 at C3, and I played, for exampe, a C chord, turning on R3 would prevent R1&2 from sounding while turning R3 off would enable R1&2 to sound. My question then is: Is there any way to layer R1,2,&3 so that all 3 would generate sound simultaneously on the same notes?