(1) Subject to section 5(1)(g) and (2), all the powers and duties of a planning commission under the Michigan planning enabling act, 2008 PA 33, MCL 125.3801 to 125.3885, are, with respect to the jurisdictional area of the joint planning commission, transferred to the joint planning commission.

  (2) Subject to section 5(2), all the powers and duties of a zoning board or zoning commission under the Michigan zoning enabling act, 2006 PA 110, MCL 125.3101 to 125.3702, are, with respect to the jurisdictional area of the joint planning commission, transferred to the joint planning commission. In exercising such powers or performing such duties, the joint planning commission shall follow the procedure specified pursuant to section 5(h), when relevant.

  (3) If only part of the territory of a participating municipality is in the jurisdictional area of a joint planning commission, the participating municipality, with the joint planning commission acting as the zoning board or zoning commission, may adopt a zoning ordinance that affects only that portion of its territory in the jurisdictional area of the joint planning commission.

  (4) The participating municipalities, with the joint planning commission acting as the zoning commission, may each adopt a joint zoning ordinance that affects the jurisdictional area of the joint planning commission and provides for the joint administration of the joint zoning ordinance, including, but not limited to, a joint zoning board of appeals.