My task was to create a new document from a given word document and then I need to disable the custom ribbon button only in that newly created Word document ribbon. Not the active document consider here because it is getting switch when user switch it.
Currently I cannot get the new Word instance ribbon control from C# code. When I apply following, both documents are affected.
CustomRibbon ribbon = Globals.Ribbons.CustomRibbon;
ribbon.button.Enabled = false;