CNC stand for Cash and Carry. CNC is non leveraged product. When you buy stock and hold it overnight, it is called a buy delivery trade. Similarly, when you sell stock and give delivery of stock, it is sell delivery trade. At ProStocks you need to use product type as CNC while placing a order to take delivery or give delivery of equity stock. Demat account is mandatory to trade in equity segment. You will not be able to see the product type CNC if you opened the account only for derivative segment and not for equity segment.
You will be able to place sell CNC order against availability of stock either with ProStocks on your behalf or in your demat account with ProStocks under POA. At ProStocks we provide no leverage when you are executing delivery trades which mean that you if you want to buy stock of Rs 1lac as CNC, you will need Rs 1lac in your trading account and similarly if you want to sell say 100 shares of Reliance with product type as CNC, you will need 100 shares of Reliance either with ProStocks on your behalf or in your demat account with ProStocks under POA