Activities can be assigned bonus points to raise the scores of all students. For example, if after administering a quiz you discover that some quiz content had not been covered in class, you can give back the points for the related questions to all students without manually typing in new scores for each student. This option in the gradebook is called Offset. 

Giving bonus points

Step 1

Go to the course you want to edit. 

Step 2

Find the Administration block:

Click Gradebook setup.

Step 3

Click the Edit link for the activity you want to apply the bonus points to; then select Edit Settings.

Step 4

Click Show more under the Grade item options.

Step 5

Find the Offset option and type the number of points you want to add to everyone's grade in the box.

Step 6

Scroll down and click Save changes.