This article shows the Grader Progress.  View the progress of all graders, what the grader assigned for the average grade for the assignment, and the number of attempts.

web Delegated grading

You can delegate grading by assigning specific users in your course to grade particular sets of student submissions. Delegated grading enables you to combine settings to accomplish your assignment grading goals and meet institutional requirements.

web Best Practice: Delegated Grading