Use Pareto Plots and Pie Charts to display the distribution of categorical variables. Pareto plots sort in descending order of frequency of occurrence or by a weighted value.
Creating Pareto plot and Pie Chart using Failuressize.jmp (Help > Sample Data Folder > Quality Control)
A second direct way to see pie charts
For more details on creating pie charts and Pareto plots, see Discovering JMP > Visualize Your Data and Essential Graphing in JMP Help.