Translation Retargeting Controls
With Show Retargeting Options enabled from the Skeleton Options menu, the Bone Hierarchy window will update with addition options.
The right column of buttons in the Skeleton Tree controls how you want to handle translation retargeting on your skeletal mesh. The dropdowns allow you to specify what will be used as the basis for retargeting: the skeleton's bone information, the animation rotation data, or the animation as applied to a scaled character.
Each dropdown allows you to control how that specific bone will handle retargeting and what will be used as the basis for that retarget.
Each button contains the following three options.
Note that you can change these settings recursively on each child of a selected bone by Right-clicking and selecting the recursive commands in the context menu.
Use translation from animation.
Use translation from skeleton.
Use translation from animation, scale length by the Skeleton's proportions.
Use relative translation from animation similar to an additive animation.