Possible Clues:

• Groups of three sharing supreme power
• Administrators of university in dock see pupil's position, almost
• Three joint leaders in the Latin form
• Exultation tails off over woman joining state ruling group
• Neat woman taking in posh state officials in Rome
• Three (Roman) jointly responsible administrative officers
• Groups of three public administrators in ancient Rome
• Building space lacking area runs into seven or three in an office
• Roman team set to cross Scottish moor on the way back, and Irish one
• Administrative trio in ancient Rome