A panel of 11 Judges, led by the Chair, will preside over competition in order to calculate the final score (F), as follows: F = D + E + T - penalties. The Chair of Judges Panel controls all aspects of the competition, makes decisions on all matters other than execution, difficulty and time scores, and acts on and communicates these decisions to all relevant officials.

The Difficulty Jury, made up of two judges, calculates the D score for the two counting elements in the first routine and all the elements in the second and final routines. The Difficulty Jury also advises the Chair of Judges Panel of any violation of the requirements of the first routine. The Difficulty Jury will signal by the raising of a red flag any change in the execution of the counting difficulty elements by the gymnast to those written in advance on the competition card.

The Execution Jury, made up of five Judges, is responsible for the E score, which is determined by the gymnasts execution of the routine. The E score is calculated by dropping the highest and lowest E Judges scores and adding together the three remaining scores. The Execution Judges independently evaluate the individual skills that make up the routines, deducting for lack of form, consistency of height and control in each element, stability on completion, and any further deductions advised by the Chair of Judges Panel.

Two members of the judging panel are Reference Judges, part of the Reference Judges System that has been introduced to establish an automatic correction system in case of any problems with E scores.

The ER score is calculated by averaging the scores of the two Reference Judges. If the gap between the E score and the ER score exceeds the predefined permitted tolerances, the E score will be replaced by the average of the ER score and the E score. Otherwise, the E score will remain unchanged. However, if the gap between the scores of the two Reference Judges exceeds the predefined permitted tolerances, the ER score will be not be taken into account, and the E score will remain unchanged.

The Time of Flight Judge is responsible for controlling the electronic timing system that determines the T score, which is the total time of flight for the routine to the nearest 1/1000th of a second rounded down to the nearest 5/1000ths of a second.

Answered by James Jarrett with Capital Gymnastics / Texas