There are 9 officials total who are approved by the International Gymnastics Federation. They are divided into panels to calculate the Difficulty Score and Execution Score. The D panel has 2 judges who independently calculate the Difficulty Score and then must reach a consensus. The E panel has 5 judges who rate execution and artistry on a scale from 10, with deductions subtracted; the highest and lowest scores are dropped and the average of the remaining scores is the Execution Score. Officials must be at least 18, have experience as an athlete or coach, and complete judging progression before being approved. Duties of officials include conducting meetings, assigning panels, having final say on decisions, and signing score sheets.