ExcelAddinHelloWorld https://docs.microsoft.com/en-us/visualstudio/vsto/walkthrough-creating-your-first-vsto-add-in-for-excel Make sure VSTO is installed for Visual Studio How to add new Ribbon to addin project Project -> Add New Item -> Ribbon (Visual Designer) How to add a new RibbonButton to the Ribbon Ribbon (Visual Designer) Open the Ribbon (Visual Designer) object Open the controls toolbox Expand the Office Ribbon Controls tab Drag a Button onto the Ribbon