Hello Sadhin, 

The important dates for the WB JEE exams, that you should remember is as follows.

On line choice filling-  9th June to 16th June 2018

Choice locking by candidates-15th June to 16th June 2018

Choice locking by the system-16th June 2018 (mid night)

Seat allotment (1st round)-19th June 2018

Seat allotment (2nd round)-27th June 2018

Seat allotment (3rd round)-4th July 2018

For more information related to the procedure of counseling. Please visit the following website.

https://www.sarvgyan.com/articles/wbjee-counselling

Good luck!