Your question is similar to this one
I've beed doing some research and I've managed to add a custom toolbar with a button.
I'm trying to figure out how to address specifically that particular Ribbon bar
This script made it work (from an answer in the other thread)
Sub test()
Dim cbToolbar
Dim csToolBarName
Dim msoBarTop
Dim ctButton1
csToolBarName = "Rekenblad"
Set cbToolbar = Application.CommandBars.Add(csToolBarName, msoBarTop, True, True)
With cbToolbar
Set ctButton1 = .Controls.Add(Type:=msoControlButton, ID:=2950)
End With
Whereas csToolBarName is actually the name of the group in the ribbon
I used this to check all the names
Sub visi()
Dim r
For Each r In Application.CommandBars
Debug.Print r.Name
Next
End Sub