Setup Login as admin Go to the calendar. Create a site event " Site event 1 ". Create a course C1 with a shortname set to c1. Login as a teacher. Create 2 students s1, s2. Enrol them to C1. Create two groups g1 and g2. Place s1 to g1. Place s2 to g2. Create an assignment A1 with a due date. Create a group override for the assignment's due date for g1. Go to the calendar. Create a course event " Course event 1 ". Create a group event for C1 " Group event 1 ". Test Login as s1. Go to the calendar. Check the site event. Confirm that it only shows " Site event 1 " Check A1's due date event, the course event, and the group event. Confirm that C1's short name is displayed together with these events' names. Check the mini calendar on the calendar block. Hover on the site event. Confirm that the popover only shows " Site event 1 " Hover on each of the course events. Confirm that C1's short name is displayed together with these events' names. Login as s2. Check A1's due date event. Confirm that C1's short name is displayed together with the due date event name. Check the mini calendar on the calendar block. Hover on A1's due date event. Confirm that the popover shows C1's short name together with the due date event name.