Setup Pedal/Mod Wheel Controls

1. Press the Master button.
2. Go to MIDI CONTROLLER ASSIGN to assign incoming controllers (e.g., Mod Wheel = 1) to letters A-D.
3. Press the Edit button.
4. Navigate to REALTIME CONTROL pages to route A-D to destinations like Pitch or Volume.
5. Adjust MIDI CONTROLLER AMOUNT in the Edit menu if necessary.

Source: Proteus/1 — proteusownersmanual (manual)