For the purpose of transacting business, the presence of members whose accumulated votes represent more than 50 percent of the total number of accumulated votes of all members who have at that time appointed representatives to the Board of Supervisors and the presence of more than 50 percent of the membership of the Board of Supervisors shall constitute a quorum. However, a smaller number may adjourn to another date. Any action adopted by a majority of the votes cast at a meeting of the Board of Supervisors at which a quorum is present shall be the action of the Board of Supervisors, except as otherwise provided in this chapter. (Amended 2017, No. M-1, § 1.)