8. Where the description of the purpose of an appropriation set out in a division, subdivision or item in Part II of the Schedule includes the words “(net appropriation—see section 8)”, the Schedule is to be taken, for the purposes of this Act and the Audit Act 1989, to provide that all money received—
(a) from the sale, leasing or hiring out of, or other dealing with, goods or personal property;
(b) from the sale of real property used for the purpose of providing staff residential accommodation or from the leasing of real property for that purpose; or
(c) from the provision of services;
may be credited to that division, subdivision or item to such extent as is, and on such conditions as are, agreed between the Treasurer and the Minister responsible for the administrative unit of the Public Service, statutory authority or other body for which the appropriation is made.