SSO GroundworkOS 6 and Cacti

[Febri]

hi all,
i've managed to inserting cacti into groundwork community 6.0.1
(CMIIW) by following this article
http://www.groundworkopensource.com/community/forums/viewtopic.php?f=41&t=11562
after fail to follow http://www.groundworkopensource.com/community/forums/viewtopic.php?f=3&t=356
knowing that v6 no longer use guava.
unfortunately, the login is just no authentication, whereas there are
some user in cacti and gwos that have limited/custom permission.
How to enable SSO login in gwos & cacti like the previous version
(5.x)?

Thank you in advance.
ps. sorry for my bad english.