Indian individual residents can start a dual account application that allows "Trading NSE and Overseas".
If you already have an account with Interactive Brokers (India) Pvt. Ltd. to trade on the National Stock Exchange of India (NSE), it will not be possible to create a linked account to trade overseas. In this case, you should start a new online application to open an IBLLC US account by selecting "Trading Overseas".
The account to trade overseas markets will be opened as a cash account under IBLLC US and allows the trading of stocks, bonds, mutual funds and ETFs.