https://www.telerik.com/products/winforms/documentation/controls/ribbonbar/programming-radribbonbar/adding-and-removing-groups-and-buttons
WinForms RibbonBar Programming RadRibbonBar Adding and Removing Groups and Buttons - Telerik UI for...
You can manipulate groups and buttons of RadRibbonBar at run time by using the appropriate objects and collections.
adding and removing groups