This page shows how AmStock chart can be used as a boxplot chart.
The main block is simulated using candlestick graph type.
The median line is achievd by adding step_no_risers graph type.
Finally custom points are added by simple line graphs with the line alpha set to zero so just the bullets are shown.
NOTE: since boxplot charts do not support grouping, the max_series setting should be set to zero so no matter how long displayed period is points are not grouped.
View settings file for this chart | Download this example as ZIP