Chord pads and the rest of the keyboard

Hello, I have a basic question about the chord pads feature. I can see that part of the keyboard (one octave by default) is now dedicated to pads. Blue keys on the display. Also few keys (green) dedicated to chord modifiers. But the rest of the keyboard (grey keys) is mute for me. Is it normal ? I would have liked to use chord pads with my left hand, and play regular keys with my right hand …
I guess I am missing a basic setting …
Thanks for your help,
Yves
(I use Cubase 11 - Elements)