Lets say that you are using the right pedal to keep the aircraft straight in the hover.
As you transition to forward flight and increase power you will need more right pedal.
As you gather speed and the vertical fin starts to take over you will need less right pedal until above a certain speed the tail rotor is at zero pitch.
If you reduce power for a powered descent you will need left pedal.
In auto you will need a lot of left pedal.
Another situation where a lot of left pedal is needed is where the engine fails in the hover. You will go from lots of right pedal to lots of left to keep straight.
Substitute left for right dependant on which way the main rotor turns.