(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 or employment in relation to an organisation or a branch; 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 285(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 285(1).