Usage: SECURITY CHANNEL <command> <time|number>

JOINS-PER-SECOND - Sets the maximum number of allowed joins per second.
MUTE-INTERVAL - Sets the time that a new channel user is muted after they join.
REJOIN-INTERVAL - Set the minimum amount of time between a user that leaves and rejoins a channel.

The channel commands allow the server to Examples:
/as help security channel <command> <time>