I created a human model in MakeHuman, Riggified it and imported it into Blender.
Now I have several Vertex Groups which were used for Weight Painting.
When I open my blend file, I can switch into edit mode and have one vertex group selected (see Image). In the properties panel of the 3D view I’ve got the section Vertex Weights. However when I deselect the preselected vertex group (preselected from the saved file) and select another one, I don’t have Vertex Weights in the panel any more.
I have no idea how I got it there in the first place, so I could reproduce it.