Do you mean something like this?
http://demos.devexpress.com/ASPxperienceDemos/NavBar/Images/Charts/ManhattanBar.jpg
If so, JMP doesn't create graphs like that. The third visual dimension in a bar chart like the one linked to above actually detracts from the information being displayed by obscuring some of it. See Stephen Few's comments on these types of graphs for more.
http://www.perceptualedge.com/articles/ie/information.pdf
The chart platform does a good job with data like this. Try this script:
-Jeff