The board shall control the expenditures of all moneys collected to the credit of the fund established for such facility and the construction, leasing, equipping, operating and maintaining of the facility and the grounds and other property real and personal belonging to the facility; provided, all moneys from taxes, donations and from any other source shall be deposited in the city treasury to the credit of that facility’s fund, and drawn upon by the vouchers of the proper officers of such board. The board shall also employ such help, professional and otherwise, as may be necessary to carry out the spirit and intent of sections 96.150 to 96.220, and all such assistants and employees shall serve at the pleasure of the board.