True if toolbar customization is disabled. Read/write Boolean.
expression.DisableCustomize
expression Required. An expression that returns one of the objects in the Applies To list.
The following example toggles the DisableCustomize property.
Sub ToggleCustomize()
With Application.CommandBars
If .DisableCustomize = True Then
.DisableCustomize = False
Else
.DisableCustomize = True
End If
End With
End Sub