You might also want to look into customizing your keyboard shortcuts or accelerators by going to Edit-->Customize-->Menus and Toolbars. There is a lot you can do with this feature besides changing and defining new keyboard shortcuts. For example, you can define new menu or toolbar items, rearrange menu items, as well as have your shortcuts invoke external JSL scripts or embedded JSL code.
This feature is available only on Windows and Linux. For more details, refer to the JMP User Guide, chapter 10, section "Customizing Menus." All JMP manuals are available in PDF format via the Help-->Books menu.