Extraordinary ministers may distribute Holy Communion at Eucharistic celebrations only when there are no ordained ministers present or when those ordained ministers present at a liturgical celebration are truly unable to distribute Holy Communion.They may also exercise this function at Eucharistic celebrations where there are particularly large numbers of the faithful and which would be excessively prolonged because of an insufficient number of ordained ministers to distribute Holy Communion. (Article 8 see here)
Contact Fr Terrence/Parish office for further information.