21. (1) The Kartripakkha may associate with themselves, in such manner and for such period as may be prescribed by ¹[rules or regulations] made under section 152, any person whose assistance or advice they may desire in carrying out any of the provisions of this Act. (2) A person associated with themselves by the Kartripakkha under sub-section (1) for any purpose shall have a right to take part in the discussions of the Kartripakkha relative to that purpose, but shall not have a right to vote at a meeting of the Kartripakkha, and shall not be a member of the Kartripakkha for any other purpose.