sheets.frozenRows Number (default: 0)

The number of frozen rows in this sheet.

Example - freezing the rows

<script>
var workbook = new kendo.ooxml.Workbook({
  sheets: [{
      frozenRows: 1,
      rows: [
        { cells: [ { value: "Frozen row" } ] },
        { cells: [ { value: "Free row" } ] }
      ]
  }]
});

workbook.toDataURLAsync().then(function(dataURL) {
  kendo.saveAs({
    dataURI: dataURL,
    fileName: "Test.xlsx"
  });
});
</script>