You can change your account's gym association any time by editing your profile. For users that create an account without going through their gym admin, they'll first be placed in our public "main site" gym. Below are step by step instructions on how to join your affiliate on Beyond The Whiteboard.
First, Edit your profile
Second, click the Change your gym association link
Third, start typing in your gym's name in the text field and select the correct gym from the list
Fourth, click the "submit" button that appears
Lastly, wait for your request to be approved!
Once your request is approved your account will automatically be associated with that gym on the site. At that point you will begin to receive the WODs they assign on a daily basis.
If you are requesting to join a public gym you will not need to wait for approval. Your account will immediately be associated with that gym.