/is
Isolate the specified player in an isolation cage for the specified time period in minutes
In the game
Usage: /isolate <PlayerName/Playerid> <TimeInMinutes>
Isolates the specified player in a cage for the time period specified.
When isolated the player is disarmed and frozen. They cannot use any commands.
If you do not specify a time in minutes the default of 1 minute will be used.
You can release an isolated player by using the /deisolate command.
Note: only one player can be isolated at once... if they leave the cage is removed.
What it does
Not explained in detail yet.
Wiki