In MIG Manual mode, you have full control of machine settings including.
Wire feed speed 1.5 - 12 m/min
Welding voltage 13V - 23V
2T/4T trigger options
Burnback control 0s - 2s
Spool on gun operation off/on
2T - Press trigger to start weld, release to finish weld.
4T - Press and release trigger to start weld, To finish weld press and release trigger.
This is commonly know as trigger latching.
Burnback is how long the welding power will continue after wire feed has stopped, this stops the wire from sticking to workpiece when weld finished