HELP Preciso criar uma função create usando dados de tabelas com relação de n para n

  ' GET: DEF_DEFECT/Create
        Function Create() As ActionResult
            Return View()
        End Function

        ' POST: DEF_DEFECT/Create
        'To protect from overposting attacks, please enable the specific properties you want to bind to, for 
        'more details see http://go.microsoft.com/fwlink/?LinkId=317598.
        <HttpPost()>
        <ValidateAntiForgeryToken()>
        Function create(<Bind(Include:="CODE_DEF,DESCRIPTION_DEF")> ByVal dEF_DEFECT As DEF_DEFECT) As ActionResult
            If ModelState.IsValid Then
                db.DEF_DEFECT.Add(dEF_DEFECT)
                db.SaveChanges()
                Return RedirectToAction("Index")
            End If
            Return View(dEF_DEFECT)
        End Function