In confirmation, a person confirms the promises made (usually on their behalf when they were an infant) at their baptism. While confirmation is not strictly speaking a sacrament, it is still required to be a fully communicant member of the Anglican Church.
Preparation for confirmation usually involves instruction by the Minister, and confirmation is carried out by the bishop and usually within the context of a service of the Lords Supper. In the past people usually wore white for confirmation, but this is no longer expected.
During Confirmation, the bishop extends his hands over the person while he says the prayer for the gifts of the Spirit. The person may be anointed with oil marking a sign of the cross on the forehead.
If you are interested in being confirmed, speak to the Minister.