Moderators are models' aides with special privileges that help to maintain order in the chat room.
If given Moderator privileges, you can do the following:
remove unwanted messages;
kick out/ban users;
block users from writing in public chat (mute).
You will get a special icon to let other users know you have special privileges in this chat room.
You can view the list of moderated chat rooms or opt out in "Followings" - "Moderated chat rooms".
In "Notification settings" you can specify who among the Models can make you a Moderator and which notifications you wish to receive.