The Secretary was a prelate responsible for writing the papal briefs addressed to emperors, kings, princes, and other dignitaries. He also prepared the allocutions that the Pope pronounced at consistories, as well as encyclicals and apostolic letters addressed to bishops and the faithful.
This describes the role of the Secretary as a high-ranking official who handled communication with monarchs, princes, and other influential figures on behalf of the Pope. He was also responsible for preparing speeches and letters that conveyed papal pronouncements and instructions to bishops and the wider Catholic community.