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 label bullets can automatically be hidden or relocated for small columns.
Hide labels
See the Pen amCharts 4: Hide label bullets for small columns by amCharts team (@amcharts) on CodePen.24419
Put labels on top of column
See the Pen amCharts 4: Relocate label bullets for small columns by amCharts team (@amcharts) on CodePen.24419