Various versions of this exist, but I would like to see it all together. I think a narrator should be able to allow the on-going story to be either
- Not visible to people outside of the game
- Visible to people who have an invite to watch
- Visible to people who are applying to join an existing game
- NOT visible to people who are applying to join an existing game
- Publicly visible for people to watch

As they see fit, and it should be changeable as the narrator desires.