Power of Attorney (POA) is a legal document which allows your stock broker (Dhan in this case) to complete your transactions in a Demat Account on your behalf (like to debit shares from your demat account when you sell them on the exchange, pledge or unpledge them, or so on).
As an alternative to the Power of Attorney (PoA), CDSL customers can now authorize their brokers to transfer shares from their demat account using a TPIN. It is a 6-digit password, which you can generate both via CDSL or our online trading app.