Nathria group stacking trinkets question

Stone Legion Heraldry and Cabalist’s Hymnal both have stacking mechanics built into them. Does BiB take having a full 5 man party into account or does it test it only by itself?

Right now it is ranked as if you are the only person who has it. It’s on the list to add a setting to simulator/optimizer for these items. I can look into doing that sooner rather than later.