The Sacrament of Confirmation is only conferred once and is available to those candidates who are baptised Catholics aged between 8 and 18 years of age.

Can. 879 The Sacrament of Confirmation confers a character. By it the baptised continue their path of christian initiation. They are enriched with the gift of the Holy Spirit, and are more closely linked to the church. They are made strong and more firmly obliged by word and deed to witness to Christ and to spread and defend the faith.

Can. 880 The Sacrament of Confirmation is conferred by anointing with Chrism on the forehead in a laying of hands, and by the words prescribed in the approved liturgical books.

In summary the sponsor must be a Catholic who is at least 16 years of age and has been has been confirmed and received the blessed Eucharist, and who lives a life of faith which befits the role to be undertaken. The sponsor cannot be the mother or father of the candidate. A baptised person who belongs to a non-catholic ecclesial community may be admitted only in company with a catholic sponsor, and then simply as a witness to the baptism.