Override Gride.ts file .

  protected getQuickSearchFields():
            Serenity.QuickSearchField[] {
            return [
                { name: "", title: "all" },
                { name: "SmkId", title: "SmkId" },
                { name: "AtmNo", title: "AtmNo" },
                { name: "MobileNo", title: "MobileNo" }
            ];
        }