You can use slide option as long as you do not get your top most priority in the choice list which you have made.
However if you get your top priority then your choice automatically gets freezed. So fill maximum number of choices even those which you feel that you might miss because you never know how the cut-offs will work in your favour.
College Comparison based on Courses, Placement, Rank, Fee
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile