Teachers may need to excuse a student (or students) from an assignment, discussion, or quiz. Excused assignments are not calculated as part of a student’s total grade.
Note: At this time you can only excuse one student at a time. If you need to excuse an entire section from a course, then you will want to adjust the original assignment and create due dates for the sections of the course that you intend to grade.
Watch How to Excuse an assignment for a student in the Gradebook
Step-By-Step Instructions: How do I excuse an assignment for a student in the Gradebook?