I’ve started editing animations in-editor with control rig and wanted to share what I learned to be able to use that awesome workflow in this tutorial! 
There were some hurdles to fix that took me a while to figure out to animate with Control Rig in Unreal that I go through step by step how to fix.
You’ll be able to preview with equipment attachments too to make animations that work for you. It’s awesome to be able to add personality to the animations without having to open up Maya or Blender 
https://dev.epicgames.com/community/learning/tutorials/dB1w/unreal-engine-start-editing-your-animation-sequences-with-control-rig