The manual is intended to be a flexible document, to serve as a guide to city personnel in the operation of the city’s business. It is understood that the manual will necessarily require revisions and updating from time to time in order to remain effective in assisting city personnel in answering daily operating questions and in making routine management decisions. Changes and revisions in the manual shall be made as required and approved by the personnel director subject to review by the mayor. (Ord. 4029 § 2, 1985.)