I don't think you can do it easily with your exact data format. If you have been able to do it previously, you could maybe create a workflow or get the script from Enhanced Log to reproduce your steps. Doing this doesn't really require too many steps BUT it does require some modifications to your data (split your results, add new column to specs and remove few other columns, set spec limits and run the platform)
Other option could be to calculate your Cpk/Ppk using Process Screening and then use Graph Builder to create those boxplots but this would still require you to modify how your data is formatted.
This is one thing I consider JMP to be lacking (difference between quality/process platforms). Some platforms are awesome (like Process Screening) and work with different data formats and other (Process Capability, MSA) quickly end up requiring you to write your own add-ins/scripts to perform seemingly simple tasks (at least I have done it to avoid many issues JMP has with our data formats).
-Jarmo