
Re: How to show up Plugin tabs
Login to your cacti interface and click the Console tab>>User Management>>Select the user "admin">>in the Realm Permissions, check the plugins that you want to access.
Source:
http://www.cahilig.org/how-install-cacti-debian-etch
http://www.cahilig.org/how-install-cacti-debian-etch#comment-8