Custom Tooltips are not possible in a distribution plot. I think it would be a nice addition to make custom tooltips available for the distribution plot. It is already possible for a few visualizations, but not yet for the distribution plot (Qlik Help - Custom Tooltips).
The possibility to add extra measures to the tooltip of the distribution plot would give the visualisation added value in my opinion. I also received questions/feedback about this from a few customers.
Thank you for your feedback on ways to improve our product. While this is something we understand would be useful, it's not on the short-term roadmap. Please continue to show your support for this idea.
Custom tooltips is a fairly new features, hope to expand to more charts in the future.
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