13.—(1) Subject to paragraphs (3) and (4) the chair of the Statutory Committee or Scrutiny Committee may co-opt appropriate persons to act as members of that committee where it is necessary or desirable to do so in order for that committee to be able to dispose of a particular case.
(2) The power in paragraph (1) is in addition to the power in regulation 11 (7).
(3) The following persons may not be co-opted as a member of the Statutory Committee—
(a)a member of the Council;
(b)a member of the Scrutiny Committee; and
(c)an employee of the Society.
(4) The following persons may not be co-opted as a member of the Scrutiny Committee—
(a)a member of the Council;
(b)a member of the Statutory Committee; and
(c)an employee of the Society.