As of now there’s no such criteria regarding JEE Mains as Bennett is a new university.
It also takes admissions based on 12th Board Exam scores. It will also give scholarship if you get decent score in JEE or even boards.
Note: You will be just required to maintain your scholarships every year by scoring 8 CGPA.
But I think if your score is good may be they’ll give you your favourite branch like Computer Science (I’m not much sure whether this thing works or not).