Wyo. R. Prac. & P. 3.04
If any difference arises as to whether the record discloses what occurred in the trial court, the difference shall be submitted to and settled by that court and the record made to conform to the truth. If anything material to either party is omitted from the record by error or accident or is misstated, the parties by stipulation, or the trial court either before or after the record is transmitted to the appellate court, or the appellate court on motion or its own initiative, may direct that the omission or misstatement be corrected, and if necessary that a supplemental record be certified and transmitted. All other questions as to the form and content of the record shall be presented to the appellate court by motion.
Wyo. R. Prac. & P. 3.04