You can just walk in. If it is your first time, make sure you don't make any other appointments for that day. Your first two times will take the longest.
2 forms of ID and 1 proof of adress
You can walk-in, but get ready to be there for at least 3 to 4 hours in your first visit. The personnel over there, are great and always in a very good mood... have a good meal and drink a lot of water the day before to be hydrated
Make sure to bring proof of residence, 2 forms of id, and ssc number
Thanks! Your answer is awaiting moderation.