How many in a team? I am indeed up for it. ACME might need a C team at this rate!
3 minimum, 5 max [that's machines, could have 10 riders on 5 tandems].
Best to ride a 200 or two with your team to gauge how everyone works. Captains need to be a bit strict about keeping to a set pace, neither dawdling nor burning out the weaker riders and looking out for who's struggling. Sometimes riders perk up after taking it easy and being protected/rested, but maybe sometimes it's necessary to do a humane cull, ideally before the last train out of the Lincolnshire badlands.
Be quite strict about stopped time and faffage, get slow eaters in the 'spoons first, everyone stops for a visit to the 'hedge', whether needed or not otherwise you'll be stopping every 10 miles for someone and so on...
It's all about the team.