First, claim your gym here.
You will need to select the "GYM OWNERS" Link.
Enter in your info and your gym name.
Followed by the payment info for your gym.
Once you have created your gym and followed the instructions on how to get set up you will be able to start adding new members and planning for your athletes.
If you're not an owner of an official CrossFit Affiliate you can still use the same link to create your personal gym and get started.