Hi @User > I want to have a group of new users who can only log in to the new app (they should not be able to log in to the current app). > How are you going to prevent these users from logging into the previous app? By detecting their email used and preventing them from signing up / logging in? I was thinking about assigning roles to users, to check which app they can access. I do not use signup at all, users are created manually, so I can add roles easily. On login, the backend would need to know from which frontend app the log-in call comes (send some custom field along with the credentials from frontend?). Basing on it and the user role I could decide whether the user can log in and create a session (with a role assigned) or return some error.