If the box has 4 plugs, two double GFCI's with a dedicated 20amp line per box, then you will have to bring the second plug connections from the same side as the incoming wire to have it work like that. Otherwise, if your incoming wires are to one side of the first GFCI and then off the second set of terminals on the other side to the next one, if the first one in the circuit blows, all 4 outlets go off.