Canon 838 of the Code of Canon Law states: “The ordering and guidance of the sacred liturgy depends solely upon the authority of the Church, namely, that of the Apostolic See and, as provided by law, that of the diocesan bishop.”
It continues: “Within the limits of his competence, it belongs to the diocesan bishop to lay down for the Church entrusted to his care liturgical regulations that are binding on all.”
Canon 835 says the “sanctifying office” in the Church is exercised principally by bishops, “who are the high priests, the principal dispensers of the mysteries of God and the moderators, promoters and guardians of the entire liturgical life in the churches entrusted to their care.”