(5) If the council of any municipality is not satisfied with the apportionment, it may, within fifteen days after receiving the notice under subsection (4), notify the planning board and the Tribunal that it desires the apportionment to be made by the Tribunal. R.S.O. 1990, c. P.13, s. 12; 2017, c. 23, Sched. 5, s. 85.