You will get 3 options in Avacs web version "Rooms" "Menu" and "Users" - Click on "Users" - Here you will get a option "Supermoderators" - Now press left mouse button on Supermoderators than drag and drop it in right or left panel - you will get Super moderator list.
Super moderators are powerful users
They have crown of every room.
They have power to ban or unban any user in any chat room.
They can turn on/off anti- flood mode in any chat room.
They can add or remove moderators of any room.
They help all users so for any help you can contact them.