Question My MIDI board has an expression pedal, but I also have an analog expression pedal that could be connected to the pedal input on the rear panel. Can I use both pedals to control parameters and/or volumes. 

Answer Yes: you can assign the pedals of the MIDI board to some parameters, and in the same time connect a pedal on the rear panel to control other parameters. G-major 2 has many modifiers options :
  • 4 modifiers for controlling parameters in the presets - so theoretically you could use up to 4 expression pedals there 
  • Global modifiers for Volume (in volume, outvolume, preset volume )
The limitation is more in the number of physical inputs for pedals.