Hi, How can I add a functionality like "register new user" so tha

For embedded SAIL interface, user should be logged into system as an Appian user. Please go through this details for embedded SAIL interface.

Authentication :

To load an Appian interface, even through a web component, the request must come from an authenticated user of the Appian system. To achieve a seamless user experience, both the web site and the Appian site should be secured using the same external authentication system. This system should be configured to pre-authenticate users to Appian. This means that once a user has logged in to the web site, they can access the Appian site--including the embedded interface--without presenting their credentials a second time. For more information, see Pre-Authenticated SSO.

If pre-authenticated SSO is not configured, users will have to present their credentials at the Appian login screen before they can access an embedded interface. If they have recently logged into the Appian site from the same browser, this might still appear seamless, but if they haven't, they will have to use the Appian login screen via the web component.

For embedded SAIL interface, user should be logged into system as an Appian user. Please go through this details for embedded SAIL interface.

Authentication :

To load an Appian interface, even through a web component, the request must come from an authenticated user of the Appian system. To achieve a seamless user experience, both the web site and the Appian site should be secured using the same external authentication system. This system should be configured to pre-authenticate users to Appian. This means that once a user has logged in to the web site, they can access the Appian site--including the embedded interface--without presenting their credentials a second time. For more information, see Pre-Authenticated SSO.

If pre-authenticated SSO is not configured, users will have to present their credentials at the Appian login screen before they can access an embedded interface. If they have recently logged into the Appian site from the same browser, this might still appear seamless, but if they haven't, they will have to use the Appian login screen via the web component.