(a)      Each member of the Commission shall receive an annual salary of $5,600 and the chairman shall receive $6,100. In addition they shall be entitled to an annual expense allowance of up to $2,400, according to rules and regulations adopted by the Commission, provided a voucher is submitted showing the expenses. All salaries are to be payable monthly from the administrative tax collected by the Commission.

      (b)      In the discretion of the County Executive of Prince George's County, subject to approval by the County Council by a vote of the majority of the full Council, a member of the Commission from that county may be designated to serve on a full-time basis, and this member may be either the chairman or the vice-chairman of the Commission. The Montgomery County Council may designate a member of the Commission from that county to serve on a full-time basis provided that person has been designated by that county under the provisions of § 2-105 of this article to serve as chairman or vice-chairman of the Commission. For any member designated by Prince George's County to serve on a full-time basis, the County Council of that county, upon recommendation from the County Executive, may authorize whatever supplementary salary as may be deemed appropriate. For any member designated by Montgomery County to serve on a full-time basis, the County Council, with approval of the County Executive, may authorize whatever supplementary salary as may be appropriate. In the event the County Executive fails to approve a supplementary salary authorization by the Council within 30 days, the Council, by an affirmative vote of 6 of its members, may authorize the supplementary salary notwithstanding the lack of approval of the County Executive. Any supplementary salary authorized in this title shall be payable also from the administrative tax collected by the Commission.