The four wards established for the purpose of elections and their respective boundaries shall be those existing at the time of ratification of this Charter and set forth on the official map of the Town, as required by G.S. 16GA-23. The Council may revise ward boundaries as provided in G.S. 160A-23 by adoption of an appropriate ordinance. The Counci1 may make other revisions, including changing the number of wards, by following the procedure set out in G.S. Chapter 160A, Article 5, Part 4, and applicable provisions of State and federal law.