cash calls

Hi How the margin is calculated on sold calls and sold puts. I got that shares are transferred into broker a/c and still they charged interest charges because of cash ledger has not sufficient amount. so for sold calls and sold puts margin must be in cash amount or share margin is valid. If...

Hello I had brought Call options but I could not square off my positions due to very low volatility so will it get cash settled after the monthly expiry that occurred yesterday or do I need to place a square off order to get settled even after expiry. Please help!! I had big positions that...