(a)
The trustees may by rule require all persons to pay fees, rents, deposits, and charges for services, facilities or materials provided by the trustees to such persons. The trustees may, by rule, provide for the method of collecting such fees, rents, deposits, and charges, and may, by rule, provide for the refund in whole or part of such fees, rents, deposits, and charges collected in error or collected for facilities, services, or materials not utilized.
(b)
If the provisions of this section are in conflict with the provisions of a memorandum of understanding reached pursuant to Chapter 12 (commencing with Section 3560) of Division 4 of Title 1 of the Government Code, the memorandum of understanding shall be controlling without further legislative action, except that if such provisions of a memorandum of understanding require the expenditure of funds, the provisions shall not become effective unless approved by the Legislature in the annual Budget Act.