Upon a recommendation from the Planning and Zoning Commission, the Council may from time to time, after holding public hearings as required by law, amend, supplement, or change the regulations provided in this ordinance or the boundaries of the zoning districts. Any ordinance regulations or zoning district boundary amendment may be requested by the town council, the Planning and Zoning Commission, or, in writing by the owner of real property, or the authorized representative of an owner of real property. Upon such request, the item(s) shall be posted on the next Planning and Zoning Commission agenda after proper application and notification has been made. All amendments shall be effective only upon passage of an ordinance making the appropriate amendments.