The so-called mission naturally referred to the establishment of branch churches and monasteries in various locations.
In the ancient ecclesiastical system, the clergy was divided into the clerical system and the Friar System. The basic organizational unit of the clergy was the church, which belonged to the diocesan—parish structural system. Each parish's highest administrator was the priest. Typically, parishes' basic organizational units were villages, towns, and cities. Several adjacent parishes formed a diocese, with the bishop as the highest administrator.
On this foundation, multiple adjacent dioceses could be combined to form a diocese, with the archbishop as the highest administrator. Further up, it was almost the position of the pope.
In addition to archbishops, the Church also had a College of Cardinals, functioning much like a senate or committee.
