Use self-registration rules to allow users register in the system without the participation of the administrator.
If the system has at least one self-registration rule and e-mail notification enabled, a user will see the additional Register button on the Login page. Use this button to access the user registration page. If there are no registration rules, the user will not be able to register in the system himself. The project list on the registration page contains the names of all existing self-registration rules. To make registration for a specific project easier, give your users the direct URL for Registration.