Enable grade penalty Go to Grades > General settings in site administration Enable Grade penalty (gradepenalty_enabled) Go to Grades > Grade penalty > Manage penalty plugins in site administration Click on 'toggle' button to enable 'Late submission penalties' plugin Go to Grade penalties > Supported modules Click to select "Assignment" Save changes Go to Grade penalties > Late submission penalties > Mange penalty rules: Create some penalty rules   Create an assignment with penalty : Create a test course Create an assignment in the course: Set due date to "Yesterday" / a date in the past Make sure grade type is set to point Enable "Grade penalties" Enrol a student to the course Login as the student Add an submission Log in as an teacher to mark the submission Expected behavior: The grade in grade book is deducted according to the penalty rules (set up in set 4.1 - Enable grade penalty) Go to "Grade history" report Select the student, and click submit to view grade history of the user Expected behavior: There are records from "gradepenalty" source, showing Original grade: grade before applying penalty Revised grade: grade after penalty is applied Go to " Mange penalty rules " on Assignment navigation bar Change penalty rules Then click on "upgrade grades" button: Expected: the adhoc task "recalculate_penalties" should run The final grade of the student should be recalculated according to the new rules