To access this option, click on the System Admin icon to show the System Configuration screen. Then, click on Preferences to show the Site Preferences screen, and from there click on Edit next to User Info Settings, which will allow you to change settings that can be applied to all users and their login. Following are the options available on the settings screen:
Allow New User Registration may be used to allow or disallow new users to become registered users of your site with their own login username and password. This may be set to No if you feel you have too many users and you need to put a cap on this, which may be due to many users requesting restricted content that is driving up your traffic and bandwidth costs with your web-host.
Select activation type of newly registered users allows you to specify how users will be authenticated; either validating automatically by XOOPS or sending a validation email to a user by XOOPS before they can login (recommended method...