In Registration Settings, you can set the url for where the users will go when they click the Registration button. As the following picture shows, we'll guide on how to setup the settings.

First, select the "Show register button" checkbox, then enter the registration url into the textbox below the line "Registration URL". At last, please click the Submit button.

Note: Only after you integrate a user database with 123 Web Messenger, can you set the registration url.