Q. 1. Is the Sacrament of Confession permitted during the celebration of the Holy Mass?
A. 1. Yes, it is. This evidence is found in the Church document, "The Priest, Minister of Divine Mercy", that was released by the Congregation For the Clergy on March 9, 2011. This aid for confessors and spiritual directors states:
# 56. "In this prospective of pastoral charity, we see that “an unwillingness to welcome the wounded sheep, and even to go out to them in order to bring them back into the fold, would be a sad sign of a lack of pastoral sensibility in those who, by priestly Ordination, must reflect the image of the Good Shepherd [...] It is particularly recommended that in places of worship confessors be visibly present [...] and that confessions be especially available even during Mass, in order to meet the needs of the faithful”. In the event of a “concelebrated Mass, it is warmly recommended that some priests refrain from concelebrating so as to hear the confessions of the faithful”."