How much is the short margin penalty charged by NSE for derivative positions?

I tagged him because, I am not getting clear answer from anyone including shubh or you…and this happened again - margin statement shows negative …

You answered before - that 80% proceeds can be used to trade fno without worrying about penalty …so I relied on your info and took trades. …but I see negative margin balance.

Can you confirm that because of early pay in by Zerodha - 80% of proceeds from sold holding is added in available margin on same day and remaining 20% on next day ?

If yes I checked margin few recent margin statements but I did not find 80% proceeds added to margin on same day or 20% margin on next day …I think they are added only after T+2 days.

This creates a lot of confusion and stress.