easeOutBack is not possible via UI

[scarlac]

The UI designer allows for [0;1] values for the points, but not above or below. If you modify the values manually it seems to work just fine, so it's just the UI that needs updating, so you can do this.

Example: $.easie(0.1,0.1,0.2,1.3) will be equivalent to easeOutBack from the regular jquery easing library.

[jaukia]

In the demo UI, making the handles draggable to arbitrary positions would be difficult, or impossible. I don't have a simple solution for this.

[scarlac]

Neither do I. However I found other tools that can do it, and you can copy-paste the bezier values into easie: http://cubic-bezier.com/#0,1.53,.5,.94