(a) hold examinations for the purposes of sections 12(1)(a) and 15(2) and (2A) as and when it considers expedient or necessary;
(b) conduct such examinations itself or appoint examiners to conduct them on its behalf; and
(c) specify conditions as regards the eligibility of persons to sit for-
(i) any examination held under paragraph (a);
(ii) any examination so held which is of a particular class; or
(iii) any particular examination so held.