Admin - SuperUser 

The coach's email is pulling from the primary email address of their account

  1. Go to Account Admin.
    1. Chameleon users: In the side menu click Team Admin > Account/Member Admin.
    2. New CMS users: In the side menu click Team Tools > Accounts.
  2. IF it needs to not be attached to their family account you will need to create another account for the coach with the new email address.  Create them as a member on that new account and don't forget to bring over the bio is it has been created.
             a.   Go to your coach's tab > delete the coach that is there and search for the newly created one
See Also
Emailing groups
Adding an attachment to the email