Test prerequisites: This test requires a course with a teacher and  at least one student enrolled.

1. Create a lesson, assignment, and quiz activity with open and close dates set.
2. Create 2 groups in the course and put the same student in both of them.
3. As the student you added to the groups in step 2, confirm you see the correct dates in the overview (i.e., the dates set in step 1).
4. For each of the activities, add a group override using one of the groups created in step 2 (use the same group for all the overrides).
5. As the student check that you see the correct (overridden) dates in the overview for each of the activities.
6. For assignment, add another group override using the second group (with different dates), then use the arrow icons to make sure it has a higher priority than the first override.
7. As the student make sure you see the second group override dates on the overview.
8. For each of the activities, create a user override for the student with a different date to the group overrides.
9. As the student check that you see the user override dates on the overview for each of the modules.
10. Unenrol the student from the course.
11. As the student check that you don't see any of the events from the course anymore.