PO-20 arcade - how do i change chords or add a chord progression? [video] July 01, 2021 17:32 Updated here's vanbot showing how to use chords in PO-20 arcade: for more information please see the user guides. Related articles pocket operator - how do i factory reset it? [video] PO-35 speak - how to configure its secret settings? pocket operator - does it have a metronome or click track? PO-33 K.O! - how do i change the volume level of an individual sound in a sequence? what is covered by warranty?