Play fair or get problems. You can chainfire pretty easy, they are a few tutorials on the forum.
Also, we got a few player who are not clean, we don't more of this kind.
Just for you, here is my small tutorial.
Weapon group 1: All your weapons
Wg 2: Your weapons without the imps
Wg 3: Only 2 of your weapons
Now, when you activate your Wg 3 hold right click, now switch to wg2 and you finally use chainfire. You can also use your 6 weapons groups and have for each weapon a group, but trust me, it's useless.