TL;DR: Where can i find complete documentation for adding blendshapes on character in UE5 (where the driver is multiple bones)?
More details:
I have a few poses that require blendshapes to correct shapes, and need to know how I actually load these onto the character and set up the drivers?
I am using Daz Studio Genesis 9 figure, and I have an issue when BOTH the Shoulder and Upper Arm bones are moved AT THE SAME TIME, so I need a way to drive the corrective blendshape when BOTH are in their respective positions.
I am aware that Unreal Engine 5 is supporting Radial Bias Functions (RBF) as a means to drive certain movement blendshapes. But I have not been able to find very clear instructions or documentation on how to load such blendshape correctives onto a character or pose asset.
I am also aware that there is a plugin (Daz to HUE) which is a workflow that sets up drivers automatically for single bone movements, but it is not completely automatic for cases like this, where there are multiple bones.
Below is a depiction of the issue in DAz Studio uncorrected, and it will look similar in Unreal Engine 5.6
