The Sacrament of Confirmation brings the fullness of the Holy Spirit to a believer. Through this Sacrament one becomes a soldier for Christ. The outpouring of the gifts is a result of this Sacrament.
Usually this Sacrament is dispensed at the Easter Vigil - for those to be baptized, or received into the faith, or who have not received this Sacrament in younger years.
When teenagers study to receive this this Sacrament, the Bishop himself will come or send a delegate, to confirm whole classes all at once. For these youngsters it is a 2 year study.