Setting unsubmitted assignments as missing

Community Member

When I look at my canvas gradebook, I see many students with either a "0" or a "-" for their grade.  Is there a way to set all of those to "missing" without having to do each student and assignment individually?

I already know how to set up the late policy to automatically enter non-submissions as "0" ...but it hasn't always been working.  I just want to be able to set stuff as missing without taking 2 hours to go through all the student's assignments individually.