Go to Users -> User DirectoryClick Add Usertype in details.Click Add UserThe user is now created. They can log in as a guest user using email address and a valid ticket number of theirs.If you want to set a specific password etc, now that you have created them click Register.Select Authentication source (or leave it at any)Uncheck "Send account activation email to email@email.com"
Set the temporary password. Confirm the passwordClick Create Account.