Qualifying codes?

Is it possible to configure a code to be “counted” like a DNC so that it DOES NOT count toward a qualification rule?

We credit Safety-Markset boat service toward qualifying in our long series, but I would like to modify the scoring for a day’s results (6-12 races) so they do not count. Sometimes skippers will swap with someone on safety boat for a race or two. With the non-raced but qualifying safety boat races scored with their average, those one or two races could win the day. I got some feedback about that…

.Tim