You may have noticed, say in Powerpoint, that when you click on a Chart that you've inserted there is a cool little grouping of tabs that happens.  You'll see that you get a "Chart Tools" tab set created in the title bar that shows you that the Design, Layout and Format tabs all apply to charts. 

You can add your own tabs to these tab sets, or add groups to a tab within the tab set, and in this video I’ll show you how.

Adding Tabs to a TabSet in Office 2007 Apps

Here are my other VSTO related screencast's: