From the above -
1) we are all human and stuff up from time to time. And even dummy spit.
2) some people are fast, some slow. And not consistant either.
3) only a few will tolerate travelling at a pace other than their own. Fewer still are safe travelling at a pace other than their own.
Accept the above.
Best to set meeting points - refueling stops are good. Lunch and dinner at a maximum. Set the policy on what happens if someone goes missing. And make certain that all KNOW what to do if leaving (reather than missing). If you want/need more rules then do that.
If it is a long way between gas stop you may need to regroup frequently .. every 50km? 20km? .. so you have enough fuel to go back and recover someone .. and get going again .. without running out of gas!
One of the reasons why I ride a bike - I can go do my own thing without worring about upsetting someone else.
Regards Frank Warner
motorcycles BMW R80 G/S 1981, BMW K11LT 1993, BMW K75 G/S