If there will be a seat in the better college according to your preference ,then u will get in second admission list automatically.

Hello Laloo Prasad Yadav Ji !

The tab that says 'Click to opt out from college re-allocation process' is for those candidates who have already been selected for a college under the University of Delhi during the allocation process and now the university is changing the allocation of the college they have previously been selected to. It is not for candidates who are selected for the first time.

Hope it helps you.
Feel free to ask further.