1. Go to your course.

2. Make sure that Turn Editing On is enabled:

3. Throughout your course homepage, find the activity that you would like to make changes to.

4. Find the Edit button to the right, directly in line with the assignment that you would like to change. Select Edit settings:

5. Once in the next menu, look for the category of Grade and open the drop-down menu:

6. For the grade Type, select None:

7. Once you have chosen your Type, scroll to the bottom and choose a Save option: