Is there a way to access proper transform handles in UE4 for making changes to HDAs? Curves seem to allow the UE4 handles when exposing a curve.

However, when going through the interactive-handles editor in Type Properties, the result is an odd grey box in UE4. The documentation on UE4 handles is extremely minimal as well.

I'd love to have simple control over prims or points that use the proper handles in UE4. Any resources, tutorials, tips, etc?