columns.columns Array

The columns which will be rendered as child columns under this group column header.

Group columns cannot be data-bound and support a limited number of bound column settings such as title.

Example - setting the column group column for displaying multicolumn headers

<div id="gantt"></div>
<script>
$("#gantt").kendoGantt({
  dataSource: [
    {
      id: 1,
      orderId: 0,
      parentId: null,
      title: "Task1",
      start: new Date("2014/6/17 9:00"),
      end: new Date("2014/6/17 11:00")
    },
    {
      id: 2,
      orderId: 1,
      parentId: null,
      title: "Task2",
      start: new Date("2014/6/17 12:00"),
      end: new Date("2014/6/17 14:00")
    }
  ],
  columns: [{
    title: "Grouped column",
    columns: [{
      field: "title"
    }, {
      field: "start"
    }]
  }]
});
</script>
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