sentences:  Once a new diocesan bishop is ordained, he then must be installed as bishop of his see, either during the service or at a later date.The term "Principal Co-Consecrator" is used to designate the bishop who assists the Principal Consecrator in the ordination of a new bishop.Co-consecrators are not mere witnesses to the fact that the consecration has taken place; rather, by taking part in it, make themselves responsible for its taking place.