As an example:
Open
Help=>Sample Data Folder=>Blood Presure.jmp
txnelson_0-1717604503417.png
Stack the BP columns using
Tables=>Stack
txnelson_1-1717604611798.png
Go to Graph Builder and Drag the Data column to the X Axis and the Label column to the Overlay drop area and then click on the Histogram icon
txnelson_2-1717604751638.png
Jim