9. The directors general and the senior directors other than the director referred to in section 6 are authorized, in the exercise of their respective powers, duties and functions, to sign(1) supply contracts;
(2) services contracts, except(a) services contracts for the transportation and handling of goods and
(b) financial services contracts and banking services contracts;
(3) agreements entered into with other government departments or bodies; and
(4) authorizations for out-of-court settlements, with or without consideration, discharges from any personal right, and any act, document or writing relating to those discharges.