From Online Manual
- Login - If registration is immediate, the new member will be automatically logged in after completing the registration form.
- Activation - If a message about email activation is displayed, the new account must first be activated before login. An email with instructions how to proceed is sent to the new member's email address.
- Approval - If a message about member approval is displayed, the new account must first be approved by an administrator before login. An email acknowledging the new member is sent to their email address. Another email may be sent later to inform them whether or not their application has been approved.