Meaning of SPAN, Adhoc Margin, Exposure

On Funds screen on kite, you can see there are SPAN, Adhoc Margin, Exposure fields. What do these mean in case you have option trade positions?

The SPAN Margin calculates the span margin and the exposure margin required by the exchanges based on volatility, underlying price movements amongst other factors. The Exposure Margin is usually levied as a percentage of the Value of the Contract in addition to the SPAN Margin.

Here’s a detailed explanation of all the fields you are looking for.