Good question. I will look into it further, but so far I’m afraid this is not achievable at all.
It would certainly work when all clients travel simultaneously (e.g. start a match from lobby when all players are ready), but not for individual clients joining a session that is already in progress (e.g. enter a persistent game world at any time).
PS: The system is not yet replicated, expect the network update to be available later this month.