This is a demo tutorial. While there is no step-by-step commentary available (yet), the live demo below is fully functional. Feel free to open it for full source code.
This demo shows how we can use
cursorpositionchanged event to reposition the related tooltip to the exact cursor's position.
See the Pen amCharts 4: Context-sensitive tooltip that follows mouse cursor by amCharts team (@amcharts) on CodePen.24419