Can. 476
© Libreria Editrice Vaticana Source: vatican.va
Whenever the correct governance of a diocese requires it, the diocesan bishop can also appoint one or more episcopal vicars, namely, those who in a specific part of the diocese or in a certain type of affairs or over the faithful of a specific rite or over certain groups of persons possess the same ordinary power which a vicar general has by universal law, according to the norm of the following canons.
Read the whole title TITLE IIIThe Internal Ordering of Particular Churches 460–572