1.The corporation shall, upon ten days written notice appropriately posted in the health facilities, promulgate rules and regulations consistent with civil service law with respect to policies, practices, procedures relating to position classifications, title structure, class specifications, examinations, appointments, promotions, voluntary demotions, transfers, re-instatements, procedures relating to abolition or reduction in positions, for personnel employed by the corporation pursuant to section five, subdivisiontwelve of this act, subject to the following exception. The New York city health and hospitals corporation shall employ peace officers appointed pursuant to this subdivision to perform the patrol, investigation, and maintenance of the peace duties of special officer, senior special officer and hospital security officer; provided however that nothing in this subdivision shall prohibit managerial, supervisory, or state licensed or certified professional employees of the corporation from performing these duties where they are incidental to their usual duties, or shall prohibit police officers employed by the city of New York from performing these duties. Until the corporation adopts by-laws, rules and regulations relating to personnel administration the corporation shall administer its personnel pursuant to the civil service law, the rules and regulations, time and leave rules classification and compensation schedules, class specifications and personnel orders of the New York city department of personnel and civil service commission, and all other applicable provisions of local or general laws relating to civil service personnel.