Is it possible to customize the switches on your FBV to control whatever you would like?

For example, because there are two pedals on the board, one labeled as a Wah and one labeled as a Volume, could I take the pedal labeled for volume and have it control the Whammy effect instead?

Another example is there is the switch labeled as "Delay", even though it says delay on the metal housing, could I make that switch control another effect that I choose or is it stuck only controlling delay effects?

Second part of this question,

I have a GCX switching system controlling strictly analog pedals.

Is there some way to have either the FBV or the FBV in conjunction with a POD XT pro turn on and off the different loops on the switcher via MIDI?

Sorry if these exact questions have been answered millions of times but I can't seem to find the exact information that I am looking for.

Thank you for any information that you can give me.