What sort of training is done in your diocese and/or parish for those wanting to serve as extraordinary ministers of the Eucharist? My aunt serves as one at her parish and it seems all people have to do is volunteer. No training is involved whatsoever.
The 1973 Instruction
Immensae Caritatis says that “Local Ordinaries possess the faculty enabling them to permit fit persons, each chosen by name as a special minister, in a given instance or for a set period or even permanently, to give communion”. It hasn’t been superseded (as I show later) which means that each extraordinary minister of Holy Communion (EMHC) must be personally approved by the Bishop. The same instruction says:The faithful who are special ministers of communion
must be persons whose good qualities of Christian life, faith, and morals recommend them. Let them strive to be worthy of this great office, foster their own devotion to the Eucharist, and show an example to the rest of the faithful by their own devotion and reverence toward the most august sacrament of the altar. No one is to be chosen whose appointment the faithful might find disquieting.
The USCCB document on the Norms for Distribution of Holy Communion, n. 28, says this:When the size of the congregation or the incapacity of the bishop, priest, or deacon requires it, the celebrant may be assisted by other bishops, priests, or deacons. If such ordinary ministers of Holy Communion are not present, “the priest may call upon extraordinary ministers to assist him, i.e., formally instituted acolytes or even some of the faithful who have been commissioned according to the prescribed rite. In case of necessity, the priest may also commission suitable members of the faithful for the occasion.”
Extraordinary ministers of Holy Communion should receive sufficient spiritual, theological, and practical preparation to fulfill their role with knowledge and reverence. When recourse is had to Extraordinary Minister of Holy Communion, especially in the distribution of Holy Communion under both kinds, their number should not be increased beyond what is required for the orderly and reverent distribution of the Body and Blood of the Lord. In all matters such Extraordinary Ministers of Holy Communion should follow the guidance of the diocesan bishop.
The 2003 Instruction
Redemptionis Sacramentum, n. 155, says:If, moreover, reasons of real necessity prompt it,
another lay member of Christ’s faithful may also be delegated by the diocesan Bishop, in accordance with the norm of law, for one occasion or for a specified time, and an appropriate formula of blessing may be used for the occasion. This act of appointment, however, does not necessarily take a liturgical form, nor, if it does take a liturgical form, should it resemble sacred Ordination in any way. Finally, in special cases of an unforeseen nature, permission can be given for a single occasion by the Priest who presides at the celebration of the Eucharist.
EMHCs should read
Ecclesia de Mysterio article 8 (which as about them).