I have not played ArmA2 yet, but I think I read something about this.
You are now somewhere near a road and forrest right? Just get close to your leader and wait for some time (could be minutes), I think your team members need to be there as well.
I am near a forrest and quite near a road but don't think we're talking about the same spot (most of the 1st mission is somewhat near roads and forrest), sincey team are all nearby already - they are waiting on the hillside while I laser designate. I think I may just have to restart the mission