Individual race handicaps

Our club sails five racing series. Two of 18 races and three of 4
races. We handicap the races using the portmouth numbers for both boat
type and total skipper & crew weight. During some of the series the
skippers sail a different type boat and/or change, add or delete crew,
changing the weight factor. We also use wind factors.

How can I change the handicap for an individual competitor on a per
race basis while keeping their basic handicap for the other races in
the series.

(Ver1.93 B3) Double-click the relevant result cells and look at the
Rating tab. It gives you the option of using a specific rating for
that race, may also be used in subsequent races if you tick the box.
Hope this helps?
Mike
Lancing SC