Dear Arit heres the complete procedure for the counselling - 

WBJEE JENPAUH 2019 Counselling Procedure

• Online Registration: Candidates are required to first register themselves for the counselling rounds. A link for registration will be provided on the website. Access the link and enter roll number, Password, security pin and login with these details.
• Payment of Registration Fee: At the time of registering for the counselling process, candidates have to make payment as counselling fee. The counselling fee will be announced later. The fee can be paid by the candidates through debit/credit card or net banking.
• Choice Filling & Locking: After the registration and fee payment, candidates have to make choice of course and college online. Candidates can also select multiple choices of course or college. As per the priority, candidates have to keep their most preferred choice at the top and less preferable choices below. After making the choice, candidates have to lock their choices. No change in the choices can be made after locking the options.
• Counselling Rounds: Candidates for the round I of counselling will be called as per the order of merit. After round I, candidates who did not get seats or whose allotment was cancelled or opted for up gradation will be able to participate in the counselling round 2. Candidates who have not participated in earlier rounds or whose seats were cancelled earlier will be allotted seats in round 3.
• Seat Allotment: Allotment of seats can be checked by the candidates by online mode from the website. Candidates after the counselling rounds will be provisionally allocated seats in various institutions.
• Reporting at the Institution and Document Verification: After the seat allocation, candidates have to report at the allotted institution or college within the prescribed time period. At the time of reporting candidates also have to verify their required documents and testimonials. Candidates have to pay seat acceptance fee and download their allotment letter.

All the best 

Hope this helps