(a) An investigating committee shall have the chairman and vice chairman who:
(1) are appointed by the resolution that establishes the investigating committee; or
(2) if the resolution does not appoint these officers, are elected by affirmative vote of a majority of all of the members of the investigating committee.
(b) The rules of an investigating committee shall provide for the selection of a presiding officer to act if the chairman and the vice chairman are absent or unable to act.
(c) (1) At a hearing of an investigating committee, the presiding officer shall be:
(i) the chairman of the investigating committee;
(ii) if the chairman is absent or otherwise unable to preside, the vice chairman; or
(iii) if the chairman and vice chairman are absent or otherwise unable to preside, the individual who is selected under the rules of the investigating committee.
(2) At a hearing, the presiding officer:
(i) shall examine the witnesses or supervise the examination by any other member of the investigating committee or by staff who are authorized to examine witnesses; and
(ii) may direct a witness to answer a relevant question or to provide a relevant book, document, or paper.