orum Hermei becomes quite crowded during Tribunal Grandis; priority for seating is given to Primi, Legati, Quaesitores Praesidens Tribunalium, and Antistites.
After those official participants, Archimagi typically fill most of the remaining seats; the few spots remaining sometimes become issues for Certamen.
Standing room space behind the Praeco's platform is typically reserved for serving caduceatores.