Any rule may be altered, amended, or repealed at any time by a majority vote of the Board; provided, however, that the portion of any rule requiring a two-thirds vote may only be amended, altered, or repealed by a two-thirds vote of the Board; and further provided, any amendment or repeal shall not affect any pending matter. (Rule 14, Ord. 555, as amended by § 4, Ord. 1227, eff. November 5, 1998)