margin requirement in iifl

Hey all would appreciate if some members who are trading especially with iifl can help me with regards to their f&o policy in the last few days of expiry when there is physical delivery and an increase of margins.

1.Is there additional margin of carrying futures lot from friday till thursday.I know that options has even if it is a plain long call/put.

2.What about hedged margin benefit which Nse provides these days is that still valid in expiry week?For example bull call spread.

I have emailed the support at iifl and even asked the Rm but they do not have a fixed answer.

thanks in advance.