Altar Servers

Servers should be mature enough to understand their responsibilities and to carry them out well and with appropriate reverence. They should have already received holy communion for the first time and normally receive the eucharist whenever they participate in the liturgy.
Servers carry the cross, the processional candles, hold the book for the priest celebrant when he is not at the altar, carry the incense and censer, present the bread, wine, and water to the priest during the preparation of the gifts or assist him when he receives the gifts from the people, wash the hands of the priest, assist the priest celebrant and deacon as necessary.

Commentators

The commentator, who, if appropriate, provides the faithful briefly with explanations and exhortations so as to direct their attention to the celebration and ensure that they are better disposed for understanding it. The commentator’s remarks should be thoroughly prepared and notable for their restraint. In performing this function the commentator stands in a suitable place within sight of the faithful, but not at the ambo.

Eucharistic Ministers

In the distribution of Communion the Priest may be assisted by other Priests who happen to be present. If such Priests are not present and there is a truly large number of communicants, the Priest may call upon extraordinary ministers to assist him, that is, duly instituted acolytes or even other faithful who have been duly deputed for this purpose.

Lectors

The lector is instituted to proclaim the readings from Sacred Scripture, with the exception of the Gospel. He may also announce the intentions for the Universal Prayer and, in the absence of a psalmist, recite the Psalm between the readings.

Mass Assistants/Ushers

Those who take up the collections in the church. Those who, in some regions, welcome the faithful at the church doors, seat them appropriately, and marshal them in processions.