ZenDog2016

I am brand new to the Line 6 Helix so this might be a silly question. I cannot figure out how to get the expression pedal to EXP1 it seems to be stuck on EXP2 Also I want to use a wah effect but cannot figure out how to make the pedal activate the wah sweep it just controls the volume. Does the expression pedal act like a real one in the fact there is a switch I need to activate by pressing the pedal forward? can anyone give me some pointers?