Hi Rashmi  !

If you have not  participated in the first and second round of Haryana BTech counselling  then also you can participate in the 3rd round of counselling for Haryana BTech  all you need to do  who is to make fresh registrations  and  and pay the registration fee  and follow the  essential steps  for counselling for counselling procedure.

To know the counselling procedure for 3rd round of Haryana BTech you can follow the given link

https://engineering.careers360.com/articles/haryana-btech-counselling-seat-allotment