Former champion Manipur scored a facile 3-0 victory over Chhattisgarh in their last quarterfinal league match played on Saturday, thus finishing top of the Group A table with seven points.
Title favourites Bengal finished second with four points after suffering 1-2 defeat at the hands of Tamilnadu.
Manipur will take on the runner-up of group B in the first semifinal to be played on May 26, while a day after West Bengal will lock their horns with the winner of Group B.
The final will be played on May 30.