These sacraments help members serve the community.
In Matrimony a baptized man and woman are united with each other as a sign of the unity between Jesus and his Church. Matrimony requires the consent of the couple, as expressed in the marriage promises. The couple and their wedding rings are the signs of this sacrament.
In Holy Orders men are ordained as priests, deacons, or bishops. Priests serve as spiritual leaders of their communities, and deacons serve to remind us of our baptismal call to help others. Bishops carry on the teachings of the apostles. The signs of this sacrament are the laying on of hands and anointing with oil by the bishop.
(from Loyola Press)