Md. Code, State Gov't § 2-1605

(a) An investigating committee shall have the chair and vice chair 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 chair and vice chair are absent or unable to act. (c) (1) At a hearing of an investigating committee, the presiding officer shall be: (i) the chair of the investigating committee; (ii) if the chair is absent or otherwise unable to preside, the vice chair; or (iii) if the chair and vice chair 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.