The Funeral Ministry is here to help grieving families during their time of loss. We reach out to them to offer our help in planning the Mass (readings, music, etc.). The day of the funeral we assist the priest in whatever capacity he needs us during the Mass.
Some of the things we may need to do are: set up the church, serve as ushers, lectors, extraordinary ministers of Holy Communion, altar servers wherever we are needed, and clean up afterward.
See also the bereavement ministry. Death and funeral notifications are posted to this link.