Minimum capital of at least 30000 is required to enter into a single trade, there is no change in it. Recommended capital by us would be above *Rs 50,000*.
As per new Sebi regulations, In FNO you will get 2 times for intraday orders and there is no margin for delivery orders and in Equity its 5 times for intraday and no margin for delivery orders.
Margin required for option selling actually depend upon the strike prices which we select, to get the exact value you need to calculate using any strategy builder like Opstra, Sensibull. Also, you can use basket orders in Zerodha at the time of taking a trade.