My problem is that the code:

Call FindLastNoXXX.FindLastNoXXX

does not seem to complete before the UserForm displays. The FindLastNoXXX
code needs to place a value in Cell AA5 prior to the UserForm opening. Any
ideas?

Private Sub Worksheet_SelectionChange(ByVal Target As Excel.Range)

Dim rng
Set rng = Cells(ActiveCell.Row, 1)

If rng(1, 2).Value = "" Then
Application.EnableEvents = False
GoTo Finished

End If

If Not Application.Intersect(Target, Range("C7:V700")) Is Nothing Then
'NoShowDataInput.Show

Call FindLastNoXXX.FindLastNoXXX

NoShowDataInput.Show

End If

Finished:

End Sub