Each pedal is a trigger plus the actions that run when you press it. Open this screen with Edit Foot Pedals under Pedals & Touch Zones.
Keyboard style pedals are always recognized. Recognize MIDI style pedals turns MIDI pedals on. This requires additional permissions. If Bluetooth is off, it says Pedals require Bluetooth to be enabled.
Add Pedal is on the app bar. The dialog is titled Add Pedal for a new one and Edit Pedal when you tap a row under Current Pedal Definitions.
Cancel closes the dialog without saving. Save stores the pedal. Save stays off while the trigger is missing or duplicated. The delete icon on a saved row asks Delete Pedal Definition.