Submit scores for multiple players to Game Center from one iPhone

Question

I have a quiz game, which i would like to integrate Game Center for. This is a "local" multiplayer game with the possibility to play six players per match.

Is it possible to submit scores to the Game Center leaderboard for all six players in this setup given that it is only one player, the one that owns the device, that is logged on to Game Center?

If so, how is that done?

Answer 1

You cannot submit scores to game center for multiple players on a single device without forcing the players to log in and out of their GC accounts.

When you report a score to a leaderboard you only pass in the leaderboard ID you want to report the score to, not the player ID.