sheets.frozenColumns Number (default: 0)

The number of the frozen columns in this sheet.

Example - freezing the columns

<script>
var workbook = new kendo.ooxml.Workbook({
  sheets: [{
      frozenColumns: 2,
      rows: [
        { cells: [ { value: "Frozen column" }, { value: "Frozen column" }, { value: "Free column" }  ] }
      ]
  }]
});

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