DNB allotment happens separately and there will be a special notification for that and is published by the diplomate nationalboard of India unlike the state and national medical councils which was the respective counselling for the MD and Ms seats on the respective counselling website

You can follow the website for further details

http://natboard.edu.in/

as per the latest updates the DNB counselling will be based on DNB rank which are much equivalent to the all India Neet PG rank but the streams and seat allotment will be only for those students who have opted for the seats and not for all.