To change lanes in staggered formation all riders should….
Turn their turn signal on when the lead rider’s signal comes on.
WAIT – do not change lanes yet, the lead rider may be waiting for traffic to clear and / or the sweep rider to claim the lane.
WAIT – do not change lanes just because the sweep rider does, there may still be traffic to clear from the lane.
Change lanes only when the person ahead of you changes lanes. That means the lead rider will change lanes before everyone except possibly the sweep rider.
The same holds true for returning to the right lane. Change lanes only after the rider ahead of you does.
If the group is passing another vehicle when returning to the right lane remember to maintain your speed as you return to the right lane.
DO NOT cut the gap ahead of that vehicle short. Remember, cars and trucks will not be able to stop before hitting you if you are forced to brake quickly in front of them.