331. How is the sacrament of Holy Orders celebrated?

The sacrament of Holy Orders is conferred, in each of its three degrees, by means of the imposition of hands on the head of the ordinand by the Bishop who pronounces the solemn prayer of consecration. With this prayer he asks God on behalf of the ordinand for the special outpouring of the Holy Spirit and for the gifts of the Spirit proper to the ministry to which he is being ordained.

Further reading: CCC 1572-1574 , 1597


332. Who can confer this sacrament?

Only validly ordained bishops, as successors of the apostles, can confer the sacrament of Holy Orders.
     
Further reading: CCC 1575-1576,  1600


333. Who can receive this sacrament?

This sacrament can only be validly received by a baptized man. The Church recognizes herself as bound by this choice made by the Lord Himself. No one can demand to receive the sacrament of Holy Orders, but must be judged suitable for the ministry by the authorities of the Church.
     
Further reading: CCC 1577-1578, 1598