1) Play your source on any channel with the S/R off
2) Ensure all effects on the EFX are OFF and the effect level is at 12
3) Turn the S/R on
4) Adjust the INPUT LEVEL on the EFX until the levels match (flip the S/R on and off repeatedly)
5) Select the WAH jog effect and flip the switch on
6) Adjust the OUTPUT LEVEL on the EFX until the levels match

You're now cleared to ROCK OUT!