As you know , you are provided with a CRL & Category rank.

Now , in every colleges there are certain number of seats that are preserved for quota students and the others for CRL. Now , if the college you apply in have a quota seat vacant and if there is no category rank better than yours, you will get that seat.

Also if you have a good CRL , then there is no need to be tensed , you may get a seat through your CRL.

So both of the ranks are considered according to the vacancy of seats.

If you have more questions , feel free to ask.

I hope my answer helps you. Wish you a prosperous career ahead!