I think you can shot two targets like you say
I need confirmation on what Charlie is doing, but I think he's moving westwards.
Franks team has limited options. Moving NW means he won't get a chance to shoot next round, it'll be all runnng and he'll get the way of Jess and Kingy.
So, it's likely they move westwards up to the rocks. As he's right at the bottom of the ma he'd likely have LOS to 6, 7 and possibly 1. Frank (one square above, behind the rocks) would I think have LOS to 6,7,1,2. Charlie, assuming he is one square further up would have LOS of 6,7,2,4 I think. This is this the best option I think but will block Kit from W9.
Of course, the bad guys are likely to move again before Frank & Dog fire. Assuming Frank and Dog don't move then Dog has LOS for 7 and 3 and Frank has LOS for noone and if he moved he would get in the way of Dogs LOS.
So it seems the best option if for Franks team to move forward and then let's see where the bad guys are

particularly if Kit doesn't move and fires at 2 and 9