To add a curve to grades on an assignment:
1. Go to the course.
2. Click on Grades to open the gradebook.
3. Click on the Setup tab.
4. Locate the assignment and click Edit.
5. Select Edit Settings.
6. Under Grade Item, click Show more.
7. Go to the Offset setting and input the number of additional points to be awarded.
8. Click Save changes.
Example: If a student earned 60/100 (60%) and you set the Offset to 15, student's curved grade will reflect 75/100 (75%) in the gradebook.