Selection Criteria and forms can be found here:
Athletes must register and declare through the Games Portal at Equestrian Canada:
Selection Criteria for 2022 World Vaulting Championships:
2022 Worlds Selection Criteria
When you want to enter an event like a CVI or world championships, the requirements are quite different than what you would expect at regular Canadian vaulting competitions. You will be entering on behalf of your country so this involves both Equine Canada and the International Equestrian Federation.