MIM in the specific sense is a public association of the faithful, canonically approved by the Archbishop Metropolitan of Benevento on the feast of the Epiphany, 1991, whereby the faithful of both sexes, priests and religious as well, might support and share the Franciscan-Marian charism of the Franciscans of the Immaculate.

The local unit of the MIM, under the patronage of a Saint, is called a CENACLE, generally organized for homogeneous groups: adults and families; youth (ages 15-25); children (ages 7-14). But whatever the character of the group every cenacle and every member of the MIM is committed to cooperate in the very mission of the Immaculate Mediatrix, namely, of conquering the entire world for the Kingdom of Christ. In the words of St. Maximilian they are to bring all men "to the Heart of Jesus through the Immaculate".

For this reason the Immaculate Conception and the universal Mediation of Mary are two truths underpinning the spirituality of the MIM. The first must be incorporated into the life of each member as it is into the very structure of the cenacles: via personal holiness in imitation of and union with the Immaculate as she is united with the Holy Spirit. Then this is expressed practically as a manifestation of the universal Mediation of Mary as Coredemptrix and Distributrix of all graces: via missionary zeal and activity whereby Christ is born in the minds and hearts of the faithful through the Virgin's maternal mediation.