You have to number them in the order you want to pursue your course.
See start selecting top colleges ie the college you want to pursue at the beginning.
Starting from top colleges to mediocre.
The choices will be submitted then you will be assigned in the order ans availablity of seats
The counseling is done like this
Eligibility | Application | Exam Pattern | Admit Card | Answer Key | Result | Cutoff
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile