You can make this kind of thing with Graph Builder:
![11807_Screen Shot 2016-06-13 at 14.07.41.png 11807_Screen Shot 2016-06-13 at 14.07.41.png](https://community.jmp.com/t5/image/serverpage/image-id/3248iC371E67AABD350AE/image-size/medium?v=v2&px=400)
(for 20 you might need a big screen though).
To do this, drag your X variable to the 'X' drop zone, then one of the Y variables to the 'Y' drop zone. Then add each of the remaining Y variables in turn, being sure to drop it 'above' the one that is already there (you should see a new, blue drop zone appear). Once you have done it once, you can save the script ('select 'Script > Save Script to Data Table') to repeat with updated data.