We have a feature on the order window that displays the margin required for a trade before placing the order. The margin required is updated in real-time based on the selected product and order type.
For Futures and Options positions, the margin required for placing the order is determined after considering any margin benefits from hedged open positions.
When squaring off or exiting positions, the order window will display the margin required. This means that the margin used will increase by that amount after closing the given leg.
Note: Sometimes, there might be small differences in the margins displayed on the margin window and what is blocked on the terminal.