Section III, Celebration of the Dedication, covers this and the following eleven numbered sections (II, 6-17). Today, we’ll take a quick look at the minister of the rite:
6. Since the bishop has been entrusted with the care of the particular Church, it is his responsibility to dedicate to God new churches built in his diocese.
If he cannot himself preside at the rite, he shall entrust this function to another bishop, especially to one who is his associate and assistant in the pastoral care of the community for which the church has been built or, in altogether special circumstances, to a priest, to whom he shall give a special mandate.
This is a bit more important than the blessing of the site or the laying of the foundation stone, as an auxiliary or retired bishop is the second choice behind the diocesan bishop, and not the pastor.