Choice promoting margin req

Hello merchants … cn somebody pls inform how a lot margin really required in zerodha for promoting a straddle in nifty in occasions of volatility whn premiums are arnd 300-400 vary? (Wish to know actual margin utilised which cud be completely different frm wht is being proven in kite basket order) In morning arnd 9.30 to 10.30am? … on expiry day cn simply add 75k further as 2%? @ShubhS9 @siva