UE to Rigify is a Blender addon that uses constraints defined by visual nodes to drive any rig and its animation with the Rigify modular rigging system. In this video, you will learn how to get up and running with the addon and how you can immediately start using it in your game development workflow!
Here is the link to the full documentation:
https://github.com/EpicGames/BlenderTools/wiki/UE-to-Rigify-Home
If you get a 404 error when you click the link above, then you will need to sign in to your github account and link it with your Epic Games account. Here is a link to instructions on how to link your account:
https://www.unrealengine.com/en-US/ue4-on-github
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