Female moderated chat
They are the Game Helper Team, Social Media Team, and the Events Team.
It is not required for a Player Moderator to become a member of any of the teams.
Once Jagex has assessed the judgement of the moderator and the reports marked for muting would have been applied correctly, then the moderator would be given the normal mute option.
The second way is through administering temporary mutes with their report.
However, players will not see text written by a Player Moderator if they are added to that player's Ignore List.