Follow the steps below:
1. Click on Settings from the bottom left.
2. Click on Grading from the right pane.
3. Click on Add Grade Format.
4. On the modal add the grade Name in the box
5. Fill in the Grade Information in the boxes and click on any of the colors to select a graded color. Also, you may write the form teacher or principal's commen here if you wish for it to appear as Auto Comment
6. Click on Add Next Grade to proceed to the next grade.
7. Add all grades, by clicking on Add Next Grade. When the grade range gets to 100, the Preview button is enabled by turning Blue.
8. Click on Save and Apply.