When you use Novell Vibe with GroupWise, some configuration steps are required to integrate the applications, as described in Configuring GroupWise for Use with Novell Vibe in the GroupWise 2012 Interoperability Guide:
Configuring GroupWise for Use with Novell Vibe
Using GroupWise as the Vibe Email System
Enabling GroupWise/Vibe Integration for GroupWise Windows Client Users
Accessing Your Vibe Site from the GroupWise Windows Client