The NOV rich text view with ribbon control is added to the Visual Studio toolbox to make it easy to create a rich text view with ribbon that contains all standard commands available for the NOV rich text editor.
If you want to customize the ribbon by adding/removing commands, you should do this via code. In this case you should not use the rich text view with ribbon control but rather extend the rich text view ribbon builder in order to customize it and then use it to create the rich text view ribbon. The following documentation topic contains more information and an example: Text Ribbon
You can also take a look at the following example that comes with Nevron Open Vision: Rich Text Editor -> Tasks -> UI Customization -> Ribbon Customization.
Nevron Support Team