Private Function CkxFrame(ByVal Frm As MSForms.Frame) As String
Dim Ctrl As MSForms.Control, N As Integer, T() As String
ReDim T(1 To Frm.Controls.Count)
For Each Ctrl In Frm.Controls
If TypeOf Ctrl Is MSForms.CheckBox Then
If Ctrl.Value Then N = N + 1: T(N) = Ctrl.Caption
End If
Next Ctrl
If N < 1 Then Exit Function
ReDim Preserve T(1 To N)
CkxFrame = Join(T, "/")
End Function