Hey Zubia!

You just have to apply in a particular course in a college matching your eligibility percentage with that of the college percentage for that particular course. If you are eligible for that course and your eligibility percentage is also matching that to your category then you can apply in that college. After that you don't have to do anything until and unless you get remarks from the college you have applied in. You just have to apply and the college will eventually check your documents and eligibility and later change your remarks to document verfied and afterwards accepted if everything is right. This process takes time and varies with different college and courses depending on the work load of colleges and number of applicants in the course. So, do not worry if you have applied and all your documents are right, you will eventually get accepted. If you have any more doubts, you can write in the comment section or post your question.

All the best!