Create a course Create assignment in a course On gradebook setup page create a manual grade item Enrol several users in course Give users grades via assignment grading interface Give users grade for manual grade item on grader report page Ensure you leave some users with empty grades On grader report page ensure that each column header (i.e grade items + user identity) has action menu with this elements 'Ascending', 'Descending' Ensure that firtst column (User name) has Ascending,Descending elements for both first name and lastname Ensure that selecting 'Ascending' (Descending) sorts corresponding column in ascending (descending) order For assignment column ensure that null values come last when sorting in descending order Ensure that first column is sorted accordingly - i.e. selecting Descending link for Last name will sort column by last name in descending order Ensure each time you sort the respective column has status icon with tootip Ensure that no status icon is shown by default (i.e. until you sort the column) Ensure that you can also toggle sorting by clicking on column header (i.e. grade item name or user profile field name)