Bukkit

Hello there,

I`m just wondering if there is possible for a player to exit an arena lobby if there are no players... I mean i created an arena for 8 players, and one for 50. There are 30/50 on one arena, and only 1/8 on other arena. The 1 stucked in the arena lobby can`t exit, and he is forced to remains here until more players will join.

Can you please make a command or tell me the actual command/sign for a player to leave the arena lobby if the game hasn`t started? :)

Thanks,
Andrei.