An acolyte is a lay person. So if something can be done by an instituted acolyte, it can be done by some lay people.
One becomes an instituted acolyte by a ceremony of institution performed by a bishop.
The 1972 Motu Proprio Ministeria Quaedam describes the acolyte:
"6. The acolyte is appointed in order to aid the deacon and to minister to the priest. It is his duty therefore to attend to the service of the altar and to assist the deacon and the priest in liturgical celebrations, especially in the celebration of Mass; he is also to distribute communion as a special minister when the ministers spoken of in the Codex Iuris Canonici can. 845 are not available or are prevented by ill health, age, or another pastoral ministry from performing this function, or when the number of communicants is so great that the celebration of Mass would be unduly prolonged. In the same extraordinary circumstances an acolyte may be entrusted with publicly exposing the blessed sacrament for adoration by the faithful and afterward replacing it, but not with blessing the people. He may also, to the extent needed, take care of instructing other faithful who on a temporary basis are appointed to assist the priest or deacon in liturgical celebrations by carrying the missal, cross, candles, etc., or by performing other such duties. He will perform these functions more worthily if he participates in the holy eucharist with increasingly fervent devotion, receives nourishment from it, and deepens his knowledge about it.
“As one set aside in a special way for the service of the altar, the acolyte should learn all matters concerning public divine worship and strive to grasp their inner spiritual meaning: in that way he will be able each day to offer himself entirely to God, be an example to all by his gravity and reverence in church, and have a sincere love for the Mystical Body of Christ, the people of God, especially for the weak and the sick.”
The full document is at romanrite.com/Churchdoc.html .
Other roles of the instituted acolyte are:
– He is the only lay minister who can do the purifications of the vessels at Mass.
– He is given a priority to lead blessing ceremonies: “An acolyte or reader who by formal institution has this special office in the Church is rightly preferred over another layperson as the minister designated a the discretion of the local Ordinary to impart certain blessings.” (Book of Blessings, Introduction, n. 18).
– He has priority to lead Sunday Celebrations in the Absence of a Priest, if a deacon is absent: “Those to be chosen first by the pastor are readers and acolytes who have been duly instituted for the service of the altar and the word of God. If there are no such instituted ministers available, other laypersons, men and women, may be appointed;” (Directions for Sunday Celebrations in the Absence of a Priest, 1988, n. 30).