KORG PA4X 76 - Manual (Page 739)

Hand controllers |735
Programming the ribbon controller
Assigning functions to the ribbon controller
The function controlled by the ribbon depends on the selected Sounds.
Assigning Sound parameters to the ribbon controller can be done in Sound
Edit .
Assigning the ribbon controller to the Sounds
You can activate/deactivate the ribbon on each Keyboard Sound.
1 Go to the Keyboard/Ensemble > Ribbon/Aftertouch page.
2 Use the Ribbon checkbox to turn the ribbon on/off on each Sound.
3 Write the changes to a Keyboard Set.