Canon 572

Societies of apostolic life, whose members without religious vows

pursue the particular apostolic purpose of the society, and leading a life as brothers in common according to their own rule of

life, striving for the perfection of charity through the observance of their constitutions, and which are comparable to institutes of the consecrated life are governed only by the particular

law of their own Church sui iuris or established by the Apostolic

See.