active members regularly attend the weekly sessions of their "praesidium" and pray daily the prayer of the legion, the "catena legionis", which consists essentially of the magnificat and some shorter prayers. their main role lies in active apostolate for the legion and the church. active members under 18 are not allowed to give the "legion promise" until that age. they are considered juniors and may hold any office except president in their "praesidium". above the level of the "praesidium", no junior may serve as an officer.