How can i integrate the groups overview into the main menue?
Link to groupjive using a Joomla menu item? Yes, that's doable. Create a new menu item within Joomla with a menu type of Community Builder > Plugin then for Plugin select CB GroupJive.
An the second question is: Why is the plugins (Groupjive and CB Subs)adminmenue not visible? normaly is adminimenue set to yes and found it beside of the cb adminmenue.
Admintemplate is default Hathor - Default and CB Vers. is 2.4.2 latest
A specific parameter to show only GJ was removed as it doesn't work anymore; it just loaded CB plugins. So to enable GJ plugin menu items you need to enable CB plugins in the admin module CB provides. This should be the default for new installs. For existing installs see the below.
www.joomlapolis.com/forum/153-professional-member-support/239782-lost-gallery-privacy-auto-actions-group-jive-activity-profile-book?start=6#307414