; vacancies Each member shall be appointed for the duration of the Commission. Any vacancy in the Commission shall not affect its powers, and shall be filled in the manner in which the original appointment was made. (e) Chairman The chairman of the Commission shall be selected by the President. The chairman of the Commission shall be responsible for— (1) the assignment of duties and responsibilities among staff personnel and their continuing supervision; and (2) the use and expenditure of funds available to the Commission. (f) Meetings (1) Administration All meetings of the Commission shall be open to the public, except that a meeting or any portion of it may be closed to the public if it concerns matters or information described in section 552b(c) of title 5, United States Code. Interested persons shall be permitted to appear at open meetings and present oral or written statements on the subject matter of the meeting. The Commission may administer oaths or affirmations to any person appearing before it. (2) Notice; minutes