Editing a domain
In the list of domains, click the name of a domain you want to edit, and then click Edit.
A domain can be associated with a specific policy or all policies. If you select Associate this domain with all policies, you are prompted to assign a default policy for remote users. If no account-level domains are assigned, remote users are registered into the policy associated with the account to which their domain is assigned.
If remote users try to register using an email address that is associated with an account-level domain and there is no default policy, they receive an error message.