Section 14. To facilitate the appointment of the members of the area board, the commissioner shall appoint in each area a selection committee of seven members, who shall be residents of or workers in the area, and who shall be interested in and knowledgeable about social services. No employees of the department shall be on said selection committee. The selection committee shall file a list of not more than fifty names, selected in accordance with the provisions of section 13, with the commissioner. If said committee fails to file such list within thirty days of its appointment, the commissioner shall within thirty days appoint the members of the area board, subject to the provisions of section 13. If said list is so filed, the commissioner shall approve and appoint from said list twenty-one persons as members of the area board. If the commissioner disapproves of any name on said list, another person or persons not on said list may be appointed to the area board, subject to the provisions of section 13.