Chapter IV
HOLY COMMUNION
- The distribution of Holy Communion
[88.] The faithful should normally receive sacramental Communion of the Eucharist during Mass itself, at the moment laid down by the rite of celebration, that is to say, just after the Priest celebrant’s Communion. It is the Priest celebrant’s responsibility to minister Communion, perhaps

assisted by other Priests or Deacons; and he should not resume the Mass until after the Communion of the faithful is concluded. Only when there is a necessity may extraordinary ministers assist the Priest celebrant in accordance with the norm of law.
[93.] The Communion-plate for the Communion of the faithful should be retained, so as to avoid the danger of the sacred host or some fragment of it falling.
(which most Churches, at least where I live, dont do)
Chapter VI
THE RESERVATION OF THE MOST HOLY EUCHARIST
AND EUCHARISTIC WORSHIP OUTSIDE MASS
- The Reservation of the Most Holy Eucharist
[132.] No one may carry the Most Holy Eucharist to his or her home, or to any other place contrary to the norm of law.
(you will often hear of “Eucharistic Ministers” doing this)
Chapter VII
EXTRAORDINARY FUNCTIONS
OF LAY FAITHFUL
[151.] Only out of true necessity is there to be recourse to the assistance of extraordinary ministers in the celebration of the Liturgy. Such recourse is not intended for the sake of a fuller participation of the laity but rather, by its very nature, is supplementary and provisional. Furthermore, when recourse is had out of necessity to the functions of extraordinary ministers, special urgent prayers of intercession should be multiplied that the Lord may soon send a Priest for the service of the community and raise up an abundance of vocations to sacred Orders.
If your local parishes dont do these then count you are truly blessed, but for most of us, we must face these liturgical abuses every Mass.
[152.] These purely supplementary functions must not be an occasion for disfiguring the very ministry of Priests, in such a way that the latter neglect the celebration of Holy Mass for the people for whom they are responsible, or their personal care of the sick, or the baptism of children, or assistance at weddings or the celebration of Christian funerals, matters which pertain in the first place to Priests assisted by Deacons. It must therefore never be the case that in parishes Priests alternate indiscriminately in shifts of pastoral service with Deacons or laypersons, thus confusing what is specific to each.
[153.] Furthermore, it is never licit for laypersons to assume the role or the vesture of a Priest or a Deacon or other clothing similar to such vesture.
- The Extraordinary Minister of Holy Communion
[154.] As has already been recalled, “the only minister who can confect the Sacrament of the Eucharist in persona Christi is a validly ordained Priest”. Hence the name “minister of the Eucharist” belongs properly to the Priest alone.
[156.] This function is to be understood strictly according to the name by which it is known, that is to say, that of extraordinary minister of Holy Communion, and not “special minister of Holy Communion” nor “extraordinary minister of the Eucharist” nor “special minister of the Eucharist”, by which names the meaning of this function is unnecessarily and improperly broadened.
[158.] Indeed, the extraordinary minister of Holy Communion may administer Communion only when the Priest and Deacon are lacking, when the Priest is prevented by weakness or advanced age or some other genuine reason, or when the number of faithful coming to Communion is so great that the very celebration of Mass would be unduly prolonged. This, however, is to be understood in such a way that a brief prolongation, considering the circumstances and culture of the place, is not at all a sufficient reason

.
(which is further explained in the first Document “Instruction…” as I noted earlier)
Those are probebly the key statements made, however reading the whole document would be a good thing to do.
God bless