how to make this kind of graph? two level category graph.

Hi, not sure whether the name I give if professional one or not. please have a check with the attachment. I wanna make a category and each group is further categorized.
Many Thanks!


Best

Geng
Make a category plot by selecting Windows > New > Category Plot and plot three numeric waves (containing the bars) against a textwave (specifying the labels). Double click each and add error bars from a further three waves.