How do I open the Turnitin Rubric Manager? There are two ways to open the Rubric Manager: Option 1: Edit the assignment settings. Under GradeMark Options click Launch Rubric Manager. Option 2: Click on the assignment to open the Submission Inbox.Click on the Launch Rubric Manager icon. Share this article:EmailPocket Related Updated on June 28, 2020 Tagged: GradebookRubricsTurnitin Was this article helpful? Yes No