Retargeting Animations in UE5 Preview 5-0EA 4-20

Hey,
can somebody tell me how the new retargeting works? For me its just confusing how to use it correctly.

  1. how to setup the retargeting options in the skeleton editor
  2. why i cant pose my character in the ik retargeter? (video below)
  3. if someone can tell me a little bit more about how the system work would be very nice :smiley: