Amendments of the charter may be authorized at any regular meeting of the stockholders or members or at any special meeting called for that purpose. An amendment must first be approved by two-thirds of the directors and then adopted by a vote representing a majority of a quorum of the members attending a meeting, for which notice of the proposed amendment shall have been given. Amendments to the charter, when so adopted, shall be applied for and secured in accordance with the provisions of the general corporation laws for the amendment of charters of corporations incorporated by the Secretary of State, as provided in Title 14.