The quote I gave came from a passage of John Paul II’l Dominicae coenae…You could of look up the document yourself…I didn’t get this off of any forum…this I obtained from EWTN…
one must not forget the primary office of priests, who have been consecrated by their ordination to represent Christ the Priest: for this reason their hands, like their words and their will, have become the direct instruments of Christ. Through this fact, that is, as ministers of the Holy Eucharist, they have a primary responsibility for the sacred species, because it is a total responsibility: they offer the bread and wine, they consecrate it, and then distribute the sacred species to the participants in the assembly who wish to receive them. Deacons can only bring to the altar the offerings of the faithful and, once they have been consecrated by the priest, distribute them, How eloquent therefore, even if not of ancient custom, is the rite of the anointing of the hands in our Latin ordination, as though precisely for these hands a special grace and power of the Holy Spirit is necessary! To touch the sacred species and to distribute them with their own hands is a privilege of the ordained, one which indicates an active participation in the ministry of the Eucharist
From EWTN:
the purpose of Dominicae coenae as a whole is to stress the ineffable mystery of the Eucharist, the sublime and unique dignity of the priesthood, and the urgency of ordained men remaining faithful to the special tasks of their state, above all regarding the worthy veneration and handling of the Most Holy Sacrament of the Altar.
as far as lay people…it says…“Just Need”