I need to add high/low/close lines to a stacked column chart. The
high/low/close values are unique, and each one corresponds with one of
the stacked bars. they should be on the same y-axis

Or I can add points next to each column of my stacked column chart and
then add custom error bars to those points. Either way will work, but
I can't figure out how to do either of these options.

Thanks