You can definitely select chord degree and chord type. Check the MIDI implementation chart in the User Guide, appendix A, General CC table for Chord degree.
You can trigger each chord or chord type via MIDI CC.
Or you can do it using The NDLR control channel. See the manual section MIDI Controllers and MIDI Message Flow. In this case, the MIDI pedal buttons would need to be configured to send MIDI note on, note off message. You can try it with any MIDI keyboard to see how it works.
You also mention program change, which is something added after shipping. Its in the latest beta FW. MIDI Program change 0-8 sent to The NDLR MIDI control channel will select your presets. Set the MIDI control channel in System menu 1.
You can trigger each chord or chord type via MIDI CC.
Or you can do it using The NDLR control channel. See the manual section MIDI Controllers and MIDI Message Flow. In this case, the MIDI pedal buttons would need to be configured to send MIDI note on, note off message. You can try it with any MIDI keyboard to see how it works.
You also mention program change, which is something added after shipping. Its in the latest beta FW. MIDI Program change 0-8 sent to The NDLR MIDI control channel will select your presets. Set the MIDI control channel in System menu 1.