(a) The board of tax assessors in each county shall designate an Appraiser IV or, in those counties not having an Appraiser IV, an Appraiser III as the chief appraiser of the county. The chief appraiser shall be responsible for:

(1) The operation and functioning of the county property appraisal staff;

(2) Certifying and signing documents prepared by the staff; and

(3) Implementing procedures deemed necessary for the efficient operation of the staff.

(b) The chief appraiser may appoint an assistant and may delegate his authority in writing to the assistant.

(c) The chief appraiser may be a member of the county board of tax assessors.