Some excerpts from the Introduction to
Rite of Reception of Baptised Christians Into Full Communion With the Catholic Church :
3.a) The rite should be seen as a celebration of the Church, with its climax in eucharistic communion. For this reason the rite of reception is generally celebrated within Mass.
b) Anything which has the appearance of triumphalism should be carefully avoided, and the manner of celebrating this Mass should be precisely defined. Both the ecumenical implications and the bond between the candidate and the parish community should be considered. Often it will be more appropriate to celebrate the Mass with only a few relatives and friends. If for a serious reason Mass cannot be celebrated, the reception should take place where possible during the liturgy of the word. The person to be received should be consulted about the form of reception. …
5. The baptised Christian is to receive both doctrinal and spiritual preparation, according to pastoral requirements in individual cases, for his reception into full communion with the Catholic Church. …
During the period of preparation the candidate may share in worship according to the norms of the Directory on Ecumenism.
Any confusion between catechumens and candidates for reception into communion should be absolutely avoided. …
9. If the profession of faith and reception take place within Mass, the one to be received – with due regard to the individual case – should confess his sins beforehand. He should first inform the confessor that he is to be received into full communion. Any confessor who is lawfully approved may receive the confession.
[Excerpts from the Introduction to the
Rite of Reception of Baptised Christians Into Full Communion With the Catholic Church © 1974, International Committee on English in the Liturgy, Inc. All rights reserved.]
The Sacrament of Penance by Catholic ministers for Non-Catholics is discussed in the 1993 Directory for the Application of Principles and Norms on Ecumenism in n. 125, 129-131, at
http://www.vatican.va/roman_curia/p...993_principles-and-norms-on-ecumenism_en.html .