If you cannot find any existing rubrics you want to use for an assignment, you can create a rubric for your course.
In Course Navigation, click the Outcomes link.
Click Manage Rubrics
Click the Manage Rubrics button.
Click the New Rubric button.
Edit Rubric Title
Edit the rubric title by typing in the title field.
Edit Criterion Description
Edit the individual Criterion descriptions.
Edit Rubric Rating
Hover over the rubric rating you wish to edit. Use the Rating description section  to edit the rubric rating. Click the Trash icon  to delete the rubric rating. Click the Add Rating icon  to add another rating.
Edit Criterion Point Value
Edit the point value of a criterion by typing in the points field.
Click the Trash icon to delete the criterion.
Click the Add Criterion link to add a new criterion to the rubric.
Find Outcome Criterion
Click the Find Outcome link to align course or account-level outcomes with the rubric.
Click the Save button to create the rubric.