Need some clarification on how ring works...

[raynes]

I understand there are two types of scenarions. One is where the player is active and only allows certain people in. The other is where anyone can go in and the creator does not have to be present.

If the scenario is going and it's the type where the creator is not present, when a new player asks to go into it, are they let in the same instance? So if a series of events was happening would they just jump in the middle of it?

Or can you specify that it only allowed to have one person or group in it at a time?