Hello aspirant, for seeking admission in Jamia Milia Islamia in b.tech you have to appear for JEE Mains  paper-1. After that a registration form is released by the institute. After filling the online registration form you eligible for the counselling. Then, a merit list is generated by the institute. In this institute there are some reservations for general, muslims, muslim obc/st, muslim women, jamia internal and PWD. 

Hope this may help you.

All the best!