Penalty scores

Hi

I want to apply a penalty of 20% of the boats that came to the start
area to a boat within an elapsed time race. SW 1.92

I have created a code using the option and have entered 20 (N = 20) in
the value box.Where do I enter the code in order that I do not lose
the elapsed time on which the system is to base the new positon?

Many thanks

Chris

Northampton Sailing Club