There's also an option Show assignable controls, but is very difficult to find!
 
	The documentation seems old, but if I pick the Display menu on the left panel, 
 
	- Display/>Module Option/>FX/>Show Assignable controls -
 
	I can then see, ONLY in the left panel, the selected effect with a list of parameters, than I can right click and Remote Control.
 
	 
 
	Thanks anyway, I finally give up TH3 and bougth hardware with pedal for my amplified guitar.