Tutorial: IK Retarget Editor 5.6+ Deep Dive

This is a deep dive showing the new changes to the IK Retarget Editor in 5.6 and 5.7.

https://dev.epicgames.com/community/learning/tutorials/89L6/unreal-engine-fortnite-ik-retarget-editor-5-6-deep-dive

I dont see a deep dive tutorial here, i see only 2 images, where is the tutorial link? how you open that chain map on the left, it doesnt show up on mine.. is it possible to record a video actually? Thanks