Start with the most important thing: creating an atmosphere conducive to prayer and reverence. Sometime before you expect the priest or eucharistic minister to come, turn off the TV and radio. Give the sick person time to pray and prepare for reception of Communion.
Those who care for the sick may want to pray with them. The caregivers are allowed to receive Communion with the sick under the usual norms for Communion.
When Communion is to be brought to the home, the ritual Pastoral Care of the Sick directs that those with the sick prepare a table covered with a linen cloth as the place where the minister will put the Eucharist until the time of Communion itself. There should be lighted candles on the table and, where customary, a vessel of holy water. I would add that it is wise also to put a spoon and glass of drinking water on the table, in case the sick person has difficulty swallowing the host.
If the sick person is well enough to assist, he or she is encouraged to join with the caregivers in choosing some of the prayers and readings for the Liturgy of the Word.
It is appropriate for one of the caregivers to meet the minister at the door of the home and lead the minister to the sickroom.