Parking in an orderly method substantially reduces the time for all to get off the road and out of traffic.
A good way to park, if there is room, is for each bike to pull ahead of the intended parking place and then back up into your spot.
This can be done very fast because you don't have to wait for the bike ahead of you to finish the job.
If you find yourself at the end of the group and can't get off the road while waiting for others to park, GO AROUND.
Come back a minute or two later when things have settled down and take your time.