Welcome to the forum.
I don't see why you won't be able to do so, but you would need an expression input from you Ground Control has the 11R only has one and can only be used as 1 expression pedal OR 2-buttons pedal (configured globally).
Volume pedal position is CC#7
Amp output is CC#92
Rig volume is CC#17
Roto speaker speed is CC#61(mod) / CC#20(fx1) / CC#113(fx2)

Or you can only use one expression and use it has you want per preset, like rig volume in preset #1, volume pedal in preset #2 and roto speaker speed is preset #3 (multi FX)