Section 4234 Of Article 2. Duties Of Attorneys-in-fact From California Probate Code >> Division 4.5. >> Part 2. >> Chapter 4. >> Article 2.

. (a) To the extent reasonably practicable under the circumstances, an attorney-in-fact has a duty to keep in regular contact with the principal, to communicate with the principal, and to follow the instructions of the principal.
  (b) With court approval, the attorney-in-fact may disobey instructions of the principal.