Applications for any change of district boundaries or classifications of property as shown on the Zoning Map, shall be submitted to the Planning Commission, at its public office, upon such forms, and all shall be accompanied by such data and information, as may be prescribed for that purpose by the Commission, so as to assure the fullest practicable presentation of facts for the permanent record. Each such application shall be verified by at least one of the owners or leases of property within the area proposed to be reclassified, attesting to the truth and correctness of all facts and information presented with the applications. Applications for amendments initiated by the Planning Commission itself shall be accompanied by its own motion pertaining to such proposed amendment.