on the side of the door is a torx bolt(right by the latch). undo it. Now pull the handle, you will see how it dislocates. With the handle out, take note of how the little parts including paddle and spring etc go together.
Taking a photo will help here.
Getting the handle back in can be fiddly, there is a "nack" to it. Im sure you will figure it, just have a good play.
Hopefully someone else can expand on this abit for you :embarassed: