https://www.youtube.com/watch?v=XPSKt_sVZek&list=WL&index=3&ab_channel=Clydiie

/All/Game/Blueprints

ABP_SandboxCharacter > Retarget Animation

Select Character

Select Anything and retarget

Export to:

Rename the Retargeted Asset

RTG_AutoGenerated > RTG_AutoGenerated_Name

Copy that name: RTG_AutoGenerated_Ass

Go to retargeted Characters: /All/Game/Blueprints/RetargetedCharacters

Open the ABP_GenericRetarget

Select IKretargeter_Map