Allow error bars or drop lines for single points
I'd like to add x- and y- error bars to individual points on a x-y chart to highlight one or two selected points. Using the Minus direction x- and y- error bars with 100% on a singe point would be great for highlighting a point.
Currently, error bars are added to every point in a series. This isn't terribly useful when there are many crowded points, or when a single point is to be highlighted. See the left chart in the attached image
Currently, an additional series must be added (see attached image) to create the desired drop-down feature. It's probably not even possible with any charts except the x-y.