All approved appropriations in the annual budget shall be restricted to the use for such expenditure categories as are set forth in the budget with the following exceptions:
A. Appropriations budgeted within a department or activity, other than for salary and wages and capital outlay, may be transferred between accounts within the department, with approval of the City Administrator.
B. Changes in the use of salary and wages between overtime, temporary, part time, and regular within a department may be made with the approval of the City Administrator.
C. Transfers of appropriations between departments and funds, or use of salary and accounts, other than those exceptions authorized herein, may be made only by authority of the City Council.
D. Expenditures in excess of the budgeted amounts are prohibited. (Ord. 1485 § 5, 1967).