Signup is available only when
SPAGOBI.SECURITY.ACTIVE_SIGNUP_FUNCTIONALITY configuration is enabled.
From the login page, new users can register their self to Knowage clicking on Signup button:
That bring the user to the registration page:
Where the user can insert his personal data, his username and his password (password constraints can be set using advanced configuration). After the registration the user will receive the email that let him verify himself. After email confirmation, account will be enabled and user will access Knowage.