Anychart (and most of the chart widgets in the app store) enables you to invoke a microflow when a chart is clicked. The microflow receives an object with info about the point you clicked (x, y, text, etc). You could use that data to create a new record.
Hope that helps,
Did you try AnyChart https://appstore.home.mendix.com/link/app/106517/Mendix/AnyChart
You can try it out herewith I think your specific usecase: https://charts102.mxapps.io/p/OnClickCallMicroflow