Using a Millermatic 350/P... I've got to follow the parameters of an approved weld procedure specification pretty close, namely Amps, Volts and Wire Feed Speed.

I can see how to adjust Volts and Wire Feed Speed, however how can I adjust the amperage, and how do I see the machine is actually operating within the amperage range I need to stay within according to the WPS?

Other welding machines I've used in the past had dials and gauges for both Amps and Volts.