Hello Aspirant,

• First you want appear Joint Entrance Examination (JEE). Conducted by Central board of secondary education (CBSE).
• After qualifying mains then you want appear JEE advanced conducted by IIT . So, Admissions based on according to jee advanced score through JOSSA counselling .
• After they give option for branch selection in online mode . Candidates offered seat allotment verification of documents and pay fees.

So , i provide small article here go through it .

https://www.careers360.com/university/indian-institute-of-space-science-and-technology-thiruvananthapuram

Here what you can find is

• Admission process .
• Eligibility criteria .
• Fees .
• Courses offered .
• Student reviews .
• Ranking / Rating .

I think this answer will help you

All the best !!!