Depends from broker to broker. Fast Forward to 9:46
Check this reply from Fyers that was posted 2 months back, as per that info you are not required to maintain the 50:50 ratio at Fyers, your collateral (equity,debt) is presently treated as CASH COMPONENT.
https://community.fyers.in/post/regarding-collateral-margin-602936361c2764f7491310de493