20 (1) The Parishad may, subject to the provisions of sub-section (2) make such modifications in the Plan , as it may think fit, which in its opinion do not affect important character of the Plan and which do not relate to the extent of land uses or the standards of population density.
(2) Before making any modification in the finally prepared plan the Parishad shall publish a notice in such form and in such manner as may be prescribed indicating therein the modifications which are proposed to be made in the finally prepared Plan, and inviting objections and suggestions from any person with respect to the proposed modifications before such date as may be specified in the notice and shall consider all objections and suggestions that may be received by it on or before the date so specified.
(3) Every modification made under this section shall be published in such manner as the Parishad may specify and the modification shall come into operation either on the date of such publication or on such later date as the Parishad may fix.
(4) If any question arises whether the modification proposed to be made are modifications which affect important character of the Plan, it shall be decided by the Parishad whose decision thereon shall be final.