Except as otherwise provided by the implementing joint powers agreement, joint resolutions, or petitions, each member of the committee is entitled to receive from the county the actual and necessary expenses incurred by that member in attending scheduled meetings and in performance of official duties in the same manner and amounts as members of the board of county commissioners, but shall receive no salary or compensation for services performed. All expenses of the committee must be paid from county funds after approval of these expenses by the boards of county commissioners in the same manner as other general county expenses.