Default 'Guest' account - PMP

Default 'Guest' account - PMP

I am trying to upgrade from 8303 to 8400.
With the new requirements it is asking us to change the default PMP 'guest' password.

I go into Admins > Users:  guest account, and there is no way to change the password.

How can I change the password to meet the new requirements?

                New to ADManager Plus?

                  New to ADSelfService Plus?