Make AI OPFOR throw smoke from trigger

[PENGUINSinc 10]

Context: I'm making a mission where a BLUFOR infantry patrol is walking down a road, once they hit a trigger zone, a civilian car drives up to them and blows up a few metres in front of them, this trigger also initiates an ambush, so OPFOR run over a ridge to the left and engage the BLUFOR (using waypoints linked to the trigger zone).

Question: How would I get the OPFOR infantry forces to throw smoke grenades towards the ambush zone once the ambush is initiated?

Thanks in advance for any help,