Greg,

My customary advice it to create and destroy the commandbar through code using the workbook's open
and close events. See below.

HTH,
Bernie
MS Excel MVP

In the workbook's Thisworkbook object code module, place the following code:

Private Sub Workbook_BeforeClose(Cancel As Boolean)
DeleteCommandbar
End Sub

Private Sub Workbook_Open()
CreateCommandbar
End Sub

In a regular code module, place the following:

Dim myBar As CommandBar
Dim myButton As CommandBarButton

Sub CreateCommandbar()

On Error Resume Next
DeleteCommandBar

Set myBar = Application.CommandBars.Add("My Bar")
With myBar
   .Position = msoBarTop
   .Visible = True
   .Enabled = True
   Set myButton = .Controls.Add(Type:=msoControlButton, ID:=23)
   With myButton
       .Caption = "Hello"
       .Style = msoButtonIcon
       .FaceId = 137
       .Enabled = True
       .OnAction = "SayHello"
   End With
End With

End Sub

Sub DeleteCommandBar()
'Delete the commandbar if it already exists
   On Error Resume Next
   Application.CommandBars("My Bar").Delete
End Sub

Sub SayHello()
MsgBox "Hello there"
End Sub

You can add as many buttons or other menu items as you like.