Korg Pa4X User Manual page 174

160| Customizing and editing the Sound sets
Choosing (and viewing) the FX group
In Style Play and Song Play mode, the FX group is fixed and cannot be
changed (you can only see it). In Sequencer mode you can freely choose it
for each Song track.
1 Go to the Mixer/Tuning > Insert FX
2 See, or choose the
or
FX group (this latter is only possible in Sequencer mode).
FX Send page.
FX group
FX group