The terms of office of the members of the Commission shall be for two years or until their successors are appointed and qualify. In the event of a vacancy in the membership of the Commission, a successor for the unexpired portion of the term shall be appointed in the same manner as his predecessor. Of the initial appointees, fifteen shall serve for one year. Present members of the Newberry County and Saluda County Economic Opportunity Commission shall continue to serve until the expiration of their terms.