A Budget appropriation adjustment shall not be made unless the approval of the Finance Director is previously obtained in writing on the prescribed forms. The Council may, by order, direct the Finance Director to notify the head of any department, or the officials of any agency, that its appropriation has been rescinded, revoked, reallocated, or canceled for any particular budget, object or appropriation during the fiscal year. Supplementary appropriations to any department or agency shall require the approval of the Council upon recommendation of the County Executive.