“While a plenary indulgence may normally be obtained only once a day, during the Jubilee a second plenary indulgence can be received on behalf of the souls in Purgatory, by those faithful who carry out an act of charity and receive Holy Communion a second time in the context of the Mass” (USCCB, NewsLetter, May 2024).
There are many resources for offering prayers for those in Purgatory, including: