Contextual Ribbon

hello everyone

im a bit new to wpf.

im trying to make the acclaimed Ribbon the center for all menus and commands of my custom app

now my main window is a tabcontrol with a few major tabs: contacts, sales, appointments,expense etc.

on top of the tabcontrol is a ribbon

(pretty similar to MS Outlook)

for each tab i have different buttons that i need

(the tabs each display a different UserControl as its main content)

plus there are several buttons that should always be in the ribbon (settings, about, new appointment...)

the best would be if i can add the RibbonTabs directly in the usercontrols and somehow merge them auto-magically with the main ribbon at runtime depending on the visible tab

thank you very much