25 Provided that the Board shall not enter into agreements of suretyship or guarantee without the approval of the Minister and the Minister responsible for finance. 8. To draw, make, accept, endorse, discount, execute and issue, for the purpose of the business of the hospital, promissory notes, bill of exchange, securities and other negotiable and transferable instruments. 9. To invest moneys not immediately required by the hospital. 10. To fix the terms and conditions, including fees, subject to which patients are admitted to, accommodated and treated in and discharged from the hospital and to fix different terms and conditions for different classes of patients: Provided that in fixing fees in terms of this subparagraph the Board shall do so subject to the directions of the Minister and the Minister responsible for finance. 11. Subject to the directions of the Minister and the Minister responsible for finance, to provide for the remission of fees paid by a specific patient or class of patients. 12. To accept a grant, donation or bequest of movable property, including money, made to the Board: Provided that, if a grant, donation or bequest referred to in this paragraph— (a) is made subject to any conditions; or (b) would involve additional or recurrent expenditure on the part of the Board; the Board shall not accept the grant, donation or bequest without the consent of the Minister. 13. Generally, to do all such things as are incidental or conducive to the exercise of the functions or the performance of the duties of the Board or which are incidental to the powers specified in this Schedule or which are calculated, directly, to enhance the value of, or to develop, the services provided at the hospital.