/stop-when-purgatory-empty - knocks out everyone who is not on the test (except GOD), and when no one is in purgatory, shuts down the server
/cancel-stopping - cancels the first command
/set-purgatory - changes the starting point of the trial
/free-player - releases the player and returns his items
/set-exit-purgatory - changes the final location of the test
By the way, all commands require purgatory.GOD permission