class black/white group style fleet size multiplier

In class week for the black and white groups your score is then somehow multipled by a number dependent on your fleet size. So the bigger your fleet the more(or less, depending how you look at it) your 1st place is worth. But this also means you can compare fleets on different coarses. Can sailwave do something like this? Or is there another way I can combine the youths with the handicap fleet and the dart fleet to get an overall?

Cheers

Matt