you can use reserve, iceberg, hidden order types to get in and out of huge positions. no broker other than IBKR supports these order types for indian markets. but the catch here is, IBKR does not support intraday. you need to carry full margin.
if you are looking for a successful intraday strategy, let me break the bubble. no intraday strategy is scalable to 50000 qty. indian market isn’t simply that deep.
if you have a conviction that your intraday strategy could scale profitably to few lakh shares, signup with some prop trading desk which are usually located in canada and trade in US markets remotely from India. props take care of leverage and technology, given you already have strategy and capital in place, in return for profit sharing.