public ActionResult Index(string p = null)
        {
            if (string.IsNullOrEmpty(p))
            {
                p = DateTime.Now.ToString("MM-yyyy");
            }

            ViewBag.FormattedMonthYear = p;

            SalesmanBusiness business = new SalesmanBusiness();

            business.SetUserAuth(ViewBag.UserAuth);

            ViewBag.IsEditable = business.IsEditable();

            return(View());
        }