The Highcharts multi-series drilldown feature allows you to create interactive charts where users can click on a data point to view more detailed breakdowns. With this functionality, you only need to provide the series data (for the main chart) and the drilldown series data (for deeper insights). The module handles the rest, dynamically rendering the drilldown chart based on the provided dataset.

This makes it easy to visualize hierarchical data and explore trends with just a click, enhancing the user experience without requiring complex configurations.