MiG-3 Gun Triggers

[TheAmazinGreat]

I am flying a SP campaign that uses the MiG-3. I always take the extra gun pods for some extra ammo because I’m still working on my deflection shooting. The problem I have is these extras fire simultaneously with the standard armament. I know there are only two triggers on the stick so is this limited by that or is there a way to tie the extra pods to my fire weapon group 3 button? I have 3 buttons on my stick mapped to group 1, group 2, and group 3. The group 3 button does nothing. 

[Ghost666]

Sorry but No. In IRL no and in the sim no.