We must now consider those who can excommunicate or be excommunicated.
Under this head there are six points of inquiry:
A Whether every priest can excommunicate?
A Whether one who is not a priest can excommunicate?
A Whether one who is excommunicated or suspended, can excommunicate?
A Whether anyone can excommunicate himself, or an equal, or a superior?
A Whether a multitude can be excommunicated?
A Whether one who is already excommunicated can be excommunicated again?