
Can a player in a game (who is not the owner) share their online content (players handbook etc) with the other players in that game?
Can a player in a game (who is not the owner) share their online content (players handbook etc) with the other players in that game?
I believe it only works if you're the one who set the game up, but I could be wrong. You can still join as a player on those games, though.
Compendium Sharing privileges are indeed determined by the game creator, not the GM.
If your goal is to allow them to use the charactermancer, a roundabout way would be to let them create their characters in a game you create and then use the Character Vault to move them into the other game (assuming the new game has sufficient permissions to allow the use of the Character Vault).