The answer to both question is yes. I would be hesitant, however, to having the extraordinary minister of Communion, rather than a priest, break the host.
'The answer to both question is yes. I would be hesitant, however, to having the extraordinary minister of Communion, rather than a priest, break the host.'
Theres no prohibition from breaking the host by Extraordinary Minister of Holy Communion (the correct title). I have done it myself during mass when the lines are long and supplies of the Body of Christ are running low. The practice is not encouraged and should be done only in unusual circumstances. The first route should always be to seek additional hosts from another EMHC or the priests or deacons.
When taking Communion to the sick or infirm, the host may be broken into as small a piece as needed. The remaining pieces of the Body of Christ should then be consumed by the EMHC according to the normal regulations of Communion.