Section 436. Hearings; immunity

1.  A hearing upon any investigation or
  review authorized by this  article  or  by  article  fourteen-h  of  the
  general  municipal  law  may  be conducted by two or more members of the
  commission or by a hearing officer duly designated by the commission, as
  the commission shall determine.
    2. A person who has violated any provision of this article or  article
  fourteen-h of the general municipal law, or of the rules and regulations
  of the commission, or any term of any license issued under said articles
  or  said  rules  and regulations, is a competent witness against another
  person so charged. In any  hearing  upon  any  investigation  or  review
  authorized  by  this  article  or  article  fourteen-h  of  the  general
  municipal law, for or relating to a violation of any provision  of  said
  articles  or  of  the  rules and regulations of the commission or of the
  term of any such license, the commission, may confer immunity upon  such
  witness  in  accordance  with  the  provisions  of  section 50.20 of the
  criminal procedure law. Such immunity shall be conferred only  upon  the
  vote  of  at  least  three  members  of  the  commission, and only after
  affording the attorney general and the appropriate district  attorney  a
  reasonable  opportunity to be heard with respect to any objections which
  they or either of them may have to the granting of such immunity.