Baptism, the Eucharist, and the sacrament of Confirmation together constitute the  "sacraments of Christian initiation", whose unity must be safeguarded.  It must be explained to the faithful that the reception of the sacrament of Confirmation is necessary for the completion of baptismal grace.

Catechism of the Catholic Church 1285
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For more information about the Sacrament of Confirmation and to register your child please contact the Director of Faith Formation/Youth Minister at your parish.

The laying on of hands = conferring new status and preparing for battle
The prayer = the sign of blessing and gift of the Holy Spirit
Oil [Sacred Chrism] = anointing/sealing with the Holy Spirit for cleansing and strengthening

See CCC 1294-1299