I am trying to place the margin order for bnf option but it gets executed as intraday even though i selected margin in DOM. Due to time issue, i placed my order anyways, it went into intraday , later on i converted it into margin as i wanted to exit post 15:15. Now there is one more issue i had to faced while exiting the margin order, as attached in screenshot below i had to fully closed by position instead of closing it partially even after using right order type. Please help me, Am i missing anything here ??. Also is there any way to change the default order type while using instant order