Gag allows you to stop guests and members from being able to talk in main chat for a maximum of 1 hour. This restricts them to only private chatting users who have them added as a friend. Gagged users will show a "stop" icon over their pawn.
Note: Unlike banning, gagging a user will not gag all of the user's accounts.
To gag a user, click on their name, click the "Ban" button, and click on "Gag". To un-gag a user, simply change their rank.