After you've finished scoring a Classifier match, you can have ForScore generate a file you can use to upload the match results to IDPA headquarters. (You need to be registered as a "club contact" with IDPA in order to access that section of their website.)
You can either upload just the classification information, or upload the entire match to display scores.
Why would you do one or the other?
Some people who shoot a lot of local matches have said they'd rather just have their sanctioned match scores on the IDPA website.
Other people may want all their match results there, especially if your club doesn't have its own website for posting scores.
So decide whether to create an "event" for your Classifier as you would for a regular local match, or whether just to upload the classification information.