Multiple headers rows

[Duoquote]

Is there a such feature to display multiple header rows and group them like this;

I always ended up finding Column Grouping thing when I searched for it, which is not related at all.

[Duoquote]

I searched a little bit more and looks like this is the solution.

{
  accessorKey: "values",
  header: $monthYear,
  size: "auto",
  columns: [
    {
      accessorKey: "Xdata"
      size: "auto",
      header: "X"
    },
    {
      accessorKey: "Ydata"
      size: "auto",
      header: "Y"
    },
    {
      accessorKey: "Zdata"
      size: "auto",
      header: "Z"
    }
  ]
};

Looks like we can nest the columns to get grouped view.