2006 New York Code - Deputies.

 
    § 496. Deputies. The commissioner shall have the power to appoint and,
  at   pleasure,  remove  deputies,  one  to  be  known  as  first  deputy
  commissioner. During the absence or disability of the commissioner,  the
  first  deputy commissioner, or if the first deputy commissioner shall be
  absent or under disability, the deputy commissioner  designated  by  the
  commissioner, shall possess all the powers and perform all the duties of
  the commissioner, except the power of making appointments and transfers.