Hello Sagnik,

In order to fill up the JEXPO form you can take reference from the below website

https://www.google.com/url?sa=i&source=web&cd=&ved=2ahUKEwjrtcXDmojgAhWLWX0KHRoDDXkQzPwBegQIARAC&url=https%3A%2F%2Fengineering.careers360.com%2Farticles%2Fjexpo&psig=AOvVaw2xzYzWiSgpcIfc3nIO6Gai&ust=1548480770793647

All the best !!