When setting up your forum, on the Settings page look for a section on Whole forum grading.

For info about other important Forum settings, be sure to read this article on setting up a graded forum.

Open this section and select a grade Type (usually Point).

Other options will open at this point. Start by setting a Maximum grade. This is the total points possible for this activity. This setting defaults to 100 points. If you prefer a different total, enter that value instead.

Set a Grading method for the forum. Simple direct grading is the default, but feel free to explore Grading guide and Rubric if you prefer a different method.

Grading category and Grade to pass are settings that effect how all grades appear in the gradebook. Check out articles in the gradebook category for more information.

You can set Notify students to Yes if you want students to receive a Moodle notification when you record a grade for this forum. However, changing this only sets the default. When you submit a forum grade for a student, you can choose whether to send a notification or not.

As with all activities, after you've reviewed other settings and made your choices, save your changes and return to the course using the buttons at the bottom of the page.