This Editor Utility Widget tool is used to blend from three preset points, like the metahuman creator, and finally output the weight of the blend for each preset.
The Resource contains an Editor Utility Widget Asset and two folders
Open Demo/Demo.umap and run Demo/EUW_DemoTool
You can drag the UI to see the model blending effect
Note that realtime toggle needs to be enabled.
Then you can see the weight changes for the three blend presets