A [guardian or other person responsible for the care and supervision of an incompetent person] [person acting at the direction of the guardian or responsible person] may use reasonable force upon the incompetent person for the purpose of safeguarding or promoting the incompetent person's welfare, including the prevention of the incompetent person's misconduct [or, if the incompetent person is in a hospital or other institution for care and custody, for the purpose of maintaining reasonable discipline in the institution].

A person responsible for the care and supervision of an incompetent person is not justified in using more force than is necessary under the circumstances, and the force used must not create a substantial risk of death, serious bodily injury, disfigurement, or gross degradation.

*****