This aura only works with the ExRT note as shown in https://wago.io/PescorusMiasma. You don't need that aura, just the exact ExRT note layout.
1. This aura marks players with Gluttonous Miasma based on a priority system, with the goal of minimizing movement between markers.
2. It automatically reads the marks from the ExRT note (as shown in the link above), no need to tell it which marks you are using. It will prioritize giving you the mark that you are assigned to in the note.
3. Additionally, it allows for a priority player list (for example healers) that are looked at first to get their desired mark. Find it in custom options.
A note about the third point: there is always at most 1 healer that is assigned Gluttonous Miasma at the time. Meaning if you put all (and only) healers on the priority list, they never have to move to a different marker.
Make sure you turn off marking from other boss mods/WeakAuras. Including marks for Volatile Ejection.
More of our auras: https://wago.io/PescorusCastleNathria