A charter board shall have thirty days after the conclusion of the hearing required by section four of this article or receipt of the certificate of the Attorney General required by section three of this article, whichever shall occur later, to make any changes it may consider necessary or desirable in its charter draft.
At least three copies of the completed charter draft shall be signed by at least a majority of the members of the board, and two copies shall be filed with the clerk of the county court.