A parent or guardian can execute a power of attorney for a child. A parent does so by leaving a notarized form with the adult who assumes power of attorney. A guardian must first file the form with the court that granted guardianship, explains Pine Tree Legal Assistance.
A power of attorney document may be useful for a temporary caregiver to send a child to school or consent to medical care. A parent does not transfer custody of the child by granting power of attorney to someone else. Power of attorney can be revoked at any time by the custodial parent or caregiver, according to Stateside Legal.