Rigging mannequin

so hope i’m asking in the right place, I’ve been trying to build a rig in Maya to match the ue4 mannequin as even with the fantastic retargeting kit ill often run into issues but I can’t find a explanation for the mannequin twist joint set up, or if any of the ik joints like ik_hand_root ikhand/food etc are still necessary. the upper twist is set firmly in the shoulder joint and none of them continue in the joint chain, just sitting there with no children. is there a guide or breakdown of the mannequin rig?

I’m not sure about any documentation.

If you are interested in rigging for ue mannequin in Maya - might I suggest either:

  1. Ue ART V1 Maya Animation Rigging Toolset | Unreal Engine Documentation
  2. AdvancedSkeleton [Demonstration26: Unreal - YouTube

(Both Free)](Demonstration26: Unreal - YouTube)

Or just rig and animate directly in UE: