For manually created grade items (those that are not associated with a Moodle activity), you can enter grades by typing them directly into the Grader report page. For grade items associated with Moodle quizzes or activities, you can still enter grades using the method. However, when you do, you are actually performing a grade override. Doing so will prevent the quiz or activity from automatically making any further updates to the grade. This is typically done in cases where, for example, a student's grade has been uplifted after extenuating circumstances or appeal.
You can bulk insert all grades for an individual student or all grades in a grade item (assessment).
You can select whether to fill the grade for just empty grades or for all grades. This is a really useful tool if you want to input a mark of zero for anyone who has not attempted the assessment and therefore has an empty grade. To use the bulk insert function: