# Welcome to the Highcharts Gantt JS (gantt) Options Reference

These pages outline the chart configuration options, and the methods and properties of Highcharts objects.

Feel free to search this API through the search bar or the navigation tree in the sidebar.

# plotOptions.xrange.grouping

Whether to group non-stacked columns or to let them render independent of each other. Non-grouped columns will be laid out individually and overlap each other.