I use the MFC-10 to do most functions of the Genos. I find it way easier than taking your hands away to press a button.
I have all 3 articulations on pedal 1,2 and 3. I have fill in on pedal 4, break on pedal 5, Pedal 6 controls Multi pad, Pedal 7 does fade in or out, Pedal 8 and 9 advance and reverse the score pages and Pedal 10 stops the Rythem section. I also have a pedal to change the registration buttons 1-10, and an Expression pedal to use for volume, and pitch bend. Then I have another pedal to use as Sustain for piano and sometimes I program it for Modulation as well. For me, this makes life easy, and after getting used to it, I don't have to look down to hit the buttons and pedals.
Unfortunately, Yamaha discontinued this Pedal Board. I am not sure why it works flawlessly.
Rick D.