In the Catholic Church, the chapter appoints its own treasurer, secretary, and sacristan and—since the Council of Trent—canon theologian and canon penitentiary. The same council approved of other local offices, which might include precentors, chamberlains ('), almoners ('), ', ', ', or custodes. Canons are sometimes given the functions of ' and "" as well. In the Church of England, the chapter includes lay members, a chancellor who oversees its educational functions, and a precentor who oversees its musical services. Some Church of England cathedrals have "lesser" and "greater" chapters with separate functions.