Hey Shivam,

You don't have to apply separately for any college in DU except for St. Stephens College. Stephens is an autonomous college and hence demand for a separate filling of a form. For Rest colleges of DU you don't have to fill a separate form. Once you have filled the application form you have to wait for the cutoffs to come which is likely to come in end june and july. Once the cutoff comes you may start with the admission procedure in whichever college you fall perfect for admission and have to go in respective colloge for admission procedure.

Hope this helps.

Good luck!