Ok, I have never found a need to use this feature, but now I may have to...how do I change the criteria to indicate what I consider a Missing Classmate? If I have an email, but they haven't registered, then they should be on that list, but I don't know how to make that change.

Thanks!

1) Click Edit Site Pages
2) Click the Edit button next to your Missing Classmates page
3) Set your criteria as you see fit

Note: No matter what criteria you set, if you have a need to override it on any particular Classmate for whatever reason, you can enter "notmissing" in the Classmate's email address field, and it will remove the Classmate from your Missing Classmate's list no matter what criteria you have selected.