Has the topic says, make a configuration IN THE SOLDIER MENU, that allow you to set up what weapon you might use in what situation, so you set up behavior of what weapons use it.
has you can see, you choice the rifle for long range, the SMG for close range, and the pistol in case of run out ammo. Being ( L ) for long, ( C ) for close and ( E ) for emergency.
in this case you never want the AI to use this gun, you have a weapon that only the player can use it. That is ( P ) of prohibited
if you get the point you will see that Melee weapons can be choice has close range engagements has well.
hope you guys understand and bandeide out.