No more than two voting members of the Commission shall be engaged principally in the buying, selling or developing of real estate for profit as individuals, or be members of any partnership, or officers or employees of any corporation that is engaged principally in the buying, selling or developing of real estate for profit. No more than two voting members shall be engaged in the same kind of business, trade or profession. (Ord. 1-1974 § 6, 1974.)