Procedure for zoning amendments. Adoption or change of zoning bylaws may be initiated by the submission of the proposed bylaw to the Town Council, by the Board of Appeals, the Planning Board, the Town Council, by an individual owning land to be affected by the change or adoption, by request of registered voters of the Town as provided in MGL c. 39, § 10, or by a regional planning agency. A proposal to amend this chapter which affects the Zoning Map shall include a complete boundary description, together with a plan of the area to be affected, showing existing zoning lines and proposed zoning lines, stating all pertinent dimensions, in feet, at a scale of not less than one hundred (100) feet to the inch. Within fourteen (14) days following receipt of any proposal to amend this chapter, the Town Council shall submit the same to the Planning Board for its review. Within sixty-five (65) days following the receipt by the Planning Board of a proposed amendment to this chapter, the Planning Board will hold a public hearing concerning the proposed amendment. The contents, posting and publication of the public hearing notice shall be as required by MGL c. 40A, § 5. Whenever a proposed amendment affects the Zoning Map, notice shall also be sent, by certified mail, return receipt requested, to all owners of land within three hundred (300) feet of the land affected, including land in adjoining towns if any, all as they appear on the most recent applicable tax list.