Genos and Roland A-33 twin keyboard set up

[44744]

Hello
I have a TRX setup. Currently the style plays on the lower keyboard (Roland) although this can be changed to play on the upper keyboard (Genos). My question is how can I set up the Roland to have a midi split so that the left side of the Roland will play the style, while the right side of the Roland will only play for example the left voice of the Genos.
Thank you.
Mike