Section 3-304. Changing number of trustees

The  board  of  trustees by
  resolution or local law, subject to permissive  referendum,  may  change
  the  number  of  trustees.  Such  action shall be in accordance with the
  following:
    a. If the number of trustees be  increased,  the  additional  trustees
  shall  be elected at the next general village election when trustees are
  regularly scheduled to be  elected.    At  that  election  half  of  the
  additional  trustees shall be elected for a single term equal to half of
  the full term for which said office is regularly scheduled to be  filled
  and  the  other  half  for  a  full such term. At all subsequent general
  village elections such offices shall be filled for full terms.
    b. If the number of trustees be reduced, no trustees shall be elected,
  other than to fill an unexpired term, until by expiration  of  terms  of
  office  the  number of trustees in office shall equal that prescribed by
  such  resolution.  Thereafter  at  the  next  general  village  election
  one-half  of  such  prescribed number of trustees shall be elected for a
  single term equal to half of the full term  for  which  said  office  is
  regularly  scheduled  to  be  filled and the other half of such trustees
  shall be elected for a full term.  At  all  subsequent  general  village
  elections such offices shall be filled for full terms.