TBH im not even sure how this method works. The UE5 ThirdPerson Template comes with IK Rigs and Retargeters that seem to work well once you figure out how to set them up. The Manny to Metahuman IK retargeter works well out of the box, but If you want to Use Quinn Animations, or Animations from packs using the UE4 Mannequin, You’ll have to set up the rigs yourself.