How do I use the Auto-Set feature to weld mild steel?

To use Auto-Set, turn the Wire Speed control into the blue or green zone corresponding to your wire diameter — the Auto-Set indicator light will illuminate. Then turn the Voltage control to the blue/green zone matching the material thickness you are welding, and the machine automatically sets the appropriate voltage and wire feed speed. Blue zones are for 0.035" wire and green zones are for 0.030" wire. (Page 21 and 24)