Let’s wrap up the last four paragraphs of the introduction to the Reception of Baptized Christians. First, a word about the sponsor:
483. At the reception, the candidate should be accompanied by a sponsor and may even have two sponsors. If someone has had the principal part in guiding or preparing the candidate, he or she should be the sponsor.
This is illustrative. RCIA presumes a group of catechumens, learning and growing together in the faith. This note about the person who “has had the principal part” in formation, seems to presume this rite will be somewhat rarer, or perhaps not necessarily integrated into a group process for the unbaptized. And notice, too, the rite treats this one-on-one relationship of formation with great importance. That it is mentioned seems to indicate the framers of RCIA envisioned a more apprentice-like approach than only a teacher-student relationship.
Communion under both forms, and for all:
484. In the eucharistic celebration within which reception into full communion takes place or, if the reception takes place outside Mass, in the Mass that follows at a later time, communion under both kinds is permitted for the person received, the sponsor, the parents and spouse who are Catholic, lay catechists who may have instructed the person, and, if the number involved and other circumstances make this feasible, for all Catholics present.
Bishops and conferences of bishops may adapt:
485. The conferences of bishops may, in accord with the provisions of the Constitution on the Liturgy, art. 63, adapt the rite of reception to various circumstances. The local Ordinary, by expanding or shrtening the rite, may arrange it to suit the particular circumstances of the persons and place involved.
486. The names of those received into the full communion of the Catholic Church should be recorded in a psecial book, with the date and place of their baptism also recorded.