Filter

Output: FreezeSplit.xlsx

public void Run()
{
    var workbook = new Workbook();
    var freezeSheet = workbook.Worksheets[0];
    freezeSheet.Name = "Freeze";

    //Freeze the first column and the top 2 rows
    freezeSheet.View.Panes.FreezePanes("B3");

    var splitSheet = workbook.AddWorksheet("Split");

    //Create four panes by splitting at F10
    splitSheet.View.Panes.SplitPanes("F10");
    workbook.SaveAs("FreezeSplit.xlsx");
}