A county director of tax equalization and any deputies or clerks shall receive mileage as provided in section 11-10-15 and their actual and necessary traveling expenses at the rate and in the same manner as provided for other county officials. The board of county commissioners shall furnish to the county director of tax equalization and the staff suitable office space and supplies as may be necessary for the proper discharge of the duties of the office. The salary and expenses of the county director of tax equalization, and any deputies or clerks, and the expense of the office must be paid from the general fund of the county.