Examine the screenshot shown in the exhibit.

The screenshot shows that the account registration feature is enabled for the guest portal and that the guest group is set to Guest_Portal_Users. This means that all guest accounts created using this feature will be placed under that group1. The screenshot also shows that email validation is enabled for the guest portal and that the email validation link expires after 24 hours. This means that all accounts registered through the guest portal must be validated through email within that time frame1.

References: 1 https://docs.fortinet.com/document/fortiauthenticator/6.4.0/administration-guide/906179/guest-management#account-registration