This addon triggers automatically when Runic Affinity is found on players within the Fatescribe Roh-Kalo encounter in the Sanctum of Domination raid. It will mark 6 of the affected players (excluding tanks) with Star, Circle, Diamond, Triangle, Square and Moon. Then when Realign Fate ends and the debuffs are removed, the markers are also removed. The intended use for this is to match player marks with world marks to easily assign players to runes.
Marking can only take place if the user is Raid Leader in the group. Alternatively there is a /runic force command to force the assignment process to run if needed.