Hello Madhur

If you are asking about admission to Engineering courses, Admissions are done on merit Prepared Basis of (10+2)% JEE Main Score/ AIEAA Score.
If you are seeking admission in any other course, kindly specify the course. 
You can also go through the link below and check the detailed information about the courses offered and the selection criteria-

 https://www.careers360.com/university/graphic-era-university-dehradun

Good Luck!