35. For the reconciliation of penitents by general confession and absolution in the cases provided by law, everything takes place as described already for the reconciliation of several penitents with individual confession and absolution, with the following exceptions.
a. After the homily or during it, the faithful who seek general absolution are to be instructed to dispose themselves properly, that is, to have a personal sorrow for sins committed and the resolve to avoid committing them again; the intention to repair any scandal and harm caused and likewise to confess in due time each one of the grave sins that they cannot confess at present. [SCDF, Pastoral Norms for General Absolution, 16 June 1972, Norm VI.] Some expiatory penance should be proposed for all to perform; individuals may add to this penance if they wish.
The “dreaded” group penance is part of form III, not form II. The rite presumes a level of personal awareness and familiarity with the sacrament I’ve rarely encountered, to add to the given penance for one’s own situation.
b. The deacon, another minister, or the priest then calls upon the penitents who wish to receive absolution to show their intention by some sign (for example, by bowing their heads, kneeling, or giving some other sign determined by the conferences of bishops). They should also say together a form of general confession (for example, the prayer, I confess to almighty God), which may be followed by a litany or a penitential song. Then the Lord’s Prayer is sung or said by all, as indicated in no. 27.
c. Then the priest pronounces the invocation that expresses prayer for the grace of the Holy Spirit to pardon sin, proclamation of victory over sin through Christ’s death and resurrection, and the sacramental absolution given to the penitents.
d. Finally, the priest invites the people to give thanks, as indicated in no. 29 and, omitting the concluding prayer, he immediately blesses and dismisses them.