Hello student

Choice filling of colleges is done in the first round of counselling after qualifying  in MAT exam. The choice of colleges may be changed with  prior to intimation in respective authorities prescribed format, even after submitting the application for admission. It should be done within the due date declared by the  authorities as per as maintaining the norms and forms of college admission.

To know more you can click on the college predictor website of the respective college.

Hope this helps