We have discussed two flows for user sign-up. In the first flow, the user provided an email while signing up, and an email was sent with a passcode. The user then used this passcode to confirm the sign-up process. In the second flow, the user created an account without providing an email, and then an admin confirmed the user. In the second flow, the user can still provide email; in such cases, the user will get the passcode, and an admin can still confirm that user. Most real-world projects support both of these options in a single flow.