Delivery margin for stock option strategies

@ShubhS9 I had posted a similar question earlier. I understand that a Naked short option will have an increased margin requirement. The confusion is when the positions are hedged.
Given the case,

  1. Will there be an increase in margin requirement in the last week of expiry?
  2. If the option becomes ITM, since it’s hedged on both sides, this will be considered as a “net-off” and would’nt require physical delivery?
  3. If the additional margins are not brought in, will there be a peak margin penalty or will there be a margin shortfall ( interest payable to zerodha)?