Hello Hanish,

IISER has specific process that is through 3 admission channel i.e. KVPY,JEE and SCB.

Please refer the given below link.Everything is defined in details.I have attached official IISER admisssion site link too.

IISER Admission eligibility criteria :

https://engineering.careers360.com/articles/iiser-admission

Official Link :

https://www.iiseradmission.in/eligibility/

In the link,various factors such as application fee,expected date of application form and so on are given below.

Hope I helped you.All the best for future endeavour!!