Joint Seat Allocation Authority ( JoSAA) will conduct JEE Main 2019 counselling and seat allotment for all the qualified and eligible candidates. To participate in counselling and seat allotment of JEE Main 2019 candidates will have to register to JoSAA in online mode. JEE Main 2019 counselling and seat allotment process will commence tentatively from second week of June in online mode. The counselling and seat allotment of JEE Main 2019 is conducted based on the candidate’s merit, preference of choices and availability of seats. During the JEE Main 2019 seat allotment, JoSAA first allotted the seats in two mock rounds. These mock rounds help candidates to know the seats, they could be allotted on the basis of their choices filling in JEE MAIN. Once mock rounds of allotment is over, seven main rounds of seat allotment will be conducted for candidates.

For more details to understand in depth, you can use this link to read more

https://engineering.careers360.com/articles/jee-main-counselling-seat-allotment

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Hello,

Lock while you give in JEE Mains you will get an all India rank according to your mouth that rank will be treated for your admission process rounds in different colleges according to their criteria and this rank is also be used in state based colleges for the admission according to your all India rank as well as state rank is also formed according to your marks.