Please, How can I activate the sustain pedal on Organ Model C (in Halion 5).
I’m using « Vintage Arch » preset.
I know this is a late response, but it might still be of value.
If you go to the sound tab, there is a trigger section. Inside is a sustain switch that needs to be turned on (it’s in the middle).
Make sure you have the top most entry in the program tree selected though, otherwise it will display one of the layers or mixer settings.