I accidentally marked the wrong student in an assignment using the rubric (grading criteria). In fact, the student I marked has not even submitted the assignment at all. (It is an online class with open submission dates.)
So, I want to completely undo my marking of the wrong student; that is, I would like her assignment submission to revert to "No submission" status. But I cannot find any way to do this. The best I could find is how to assign the student the minimum grade on all criteria, so she now has a 0.
Sorry, but I am a user, so I can't tell what version of Moodle I am running. I would appreciate any help on this.