In the top right corner of the portal pages is are four items (History, Forward, Back and a Context Menu). The Context Menu has six options: Open in New Window, Refresh, Personalize, Details, Add to Browser Favorites, and Add to Portal Favorites.
When the user selects the Personalize option it is allowing them to add content and change the page layout, neither of which I want them to do. So how can I disable this Personalize option so they can't select it?