(a) have effect in addition to, and not in derogation of, any rule of law relating to the duty or liability of a person because of his or her office as a Board member or employment in relation to the Agency; and
(b) do not prevent the commencement of proceedings for a breach of duty, or in respect of a liability, referred to in paragraph (a).
This section does not apply to subsection 56(2) to the extent to which it operates on the duties at common law and in equity that are equivalent to the requirements of subsection 56(1).