Now, with 5 examiners for my Ham radio license, I fully expected each one of them to grade an examine. But instead, three of them graded all of the exams.
First one graded all of the exams and then passed them to the next who also graded the exams. Then that person passed the exams to the third person who also graded the exams. And the other two examiners supervised the grading to make sure that it was done correctly.
In all honesty, when I took my pistol license test, we all graded our own tests and then turned them in to the examiner. There was less paper work involved in getting a pistol license than there was in getting a Ham radio license.