By using a drill mode in a visual we can explore in-depth details about our data. And on top of that, there is a simple way to further improve this user experience - a custom tooltip. This tutorial covers a simple tip for enhancing report by creating a custom tooltip with visual hierarchy. Since custom tooltips can be created in many variations, for example, with a use of icons or symbols, they often better respond to business needs than the default ones. The implementation of this solution will certainly make your reports more readable and user-friendly.