(a) The board may prescribe:
(1) the method and manner of making purchases and expenditures by and for the district; and
(2) all accounting and control procedures.
(b) The board by resolution may delegate a power described by Subsection (a) to:
(1) the Midland Memorial Foundation or its successors; or
(2) a person who enters into an operating or management agreement with the district to exercise the power.