If you are using the foot pedal, you will be making your fine adjustments as you weld. Everyone has their own style to that. Some people like to have the welder setup to the current they expect to use and just use the pedal for tapering off, doing most of the weld with it "floored". Others like to have power above and below the expected level and will set the welder so that they weld at about the half throttle position. Then you have some extra power on tap for thicker areas or places where you can't get in as close. Being able to play with the heat is one of the biggest advantages to TIG welding.
Not that I haven't used a foot pedal for stick welding, too, cause I have.
Long arc, short arc, heliarc and in-the-dark!