2006 New York Code - Number To Be Selected.

 
    § 508. Number to be selected. The commissioner of jurors shall draw at
  random  for each term and each separate part of a term of court at which
  issues are triable by jury, such number of petit jurors and such  number
  of  grand jurors as he believes necessary, unless otherwise specified by
  order of the appellate  division  or  by  written  order  of  the  judge
  appointed  to  hold  the part or term of court. Jurors shall be drawn in
  such manner, and serve for such  period  of  time,  as  the  appropriate
  appellate division shall prescribe by rule.