How To Add A New Button In A Ribbon Group

[Excel Fox]

A RibbonButton Class represents a button element in the ribbon fluent user interface. A ribbon button can be added to a group as mentioned in the example attached.

For quick and easy implementation of XML code for ribbon, use an XML editor for Oiffce 2007/10.
Custom UI Editor

Alternatively, you could also use Andy Pope's RibbonX Visual Designer