Requirement of documents

Why is it necessary to fill POA form while activating a new account and also told how to add a nominee to registered account?

The POA allows your broker to debit stocks from your demat account when you sell them. Its paperless.

Check this post to know more about why POA is required. To add a nominee you need to courier us the nomination form along with a document of the nominee. You can download the nomination form here.

Just to let everyone know - nomination is basically useless. You would need a succession certificate from court or a probate of a will to transfer shares held in the account of the deceasesd to the nominee’s demat account. So dont waste your time to assign nominees.