Chapter III: Offices and Ministries in the Mass

58. All in the assembly gathered for Mass have an individual right and duty to contribute their participation in ways differing according to the diversity of their order and liturgical function. [45] Thus in carrying out this function, all, whether ministers or laypersons, should do all and only those parts that belong to them, [46] so that the very arrangement of the celebration itself makes the Church stand out as being formed in a structure of different orders and ministries.