Attendances of witnesses
9.—(1) The Commissioner may, if it is considered necessary for the purposes of an examination, require a person to whom paragraph (2) applies to attend before the Commissioner in person to provide information, explanations or assistance.
(2) The persons to whom this paragraph applies are persons who are required_
(a)to provide information under paragraph (1)(a) of regulation 8, or
(b)to provide an explanation under paragraph (1)(b) of regulation 8.
(3) The Commissioner may only require a person to attend in person at any place in accordance with paragraph (1) if reasonable written notice of the proposed date of attendance and the information, explanations or assistance required by the Commissioner has been given to that person.
(4) In connection with such attendance in person, the Commissioner may, subject to section 74(4) of the Act, issue witness summonses and administer oaths or affirmations and may permit a person to be represented before the Commissioner.