California Code, Probate Code - PROB § 1454

(1) The training or experience, or both, necessary (i) to make the investigations required under this division, (ii) to communicate with, assess, and deal with persons who are or may be the subject of proceedings under this division, and (iii) to perform the other duties required of a court investigator.

(2) A demonstrated sufficient knowledge of law so as to be able to inform conservatees and proposed conservatees of the nature and effect of a conservatorship proceeding and of their rights, to answer their questions, and to inform conservators concerning their powers and duties.