Drag Group onto the Overlay dropzone. That's it.
[x on x, y on y]
If you want to connect the lines instead of a smoother, just switch from smoother to "Line":
![hogi_0-1719605448562.png hogi_0-1719605448562.png](https://community.jmp.com/t5/image/serverpage/image-id/65720iDA27340C3AC1782F/image-size/medium?v=v2&px=400)
by right-clicking on the legend, you can adjust the colors and markers.
and via the red triangle menu, you can specify the legend position to be at the bottom.