This Mesh Baker tutorial is about Combining Skinned Meshes.
For questions about Mesh Baker please visit the Unity Forum:
https://forum.unity.com/threads/mesh-baker-by-digital-opus-released.159258/
Detailed instructional videos are available for specific Mesh Baker components and uses. This video mentions the following links:
Mesh Baker Basics
https://youtu.be/rAZ5TgMLiX4
Mesh Baker Settings
https://youtu.be/UTaplOwuIDQ
Texture Baker Basics
https://youtu.be/XSdwuLvChRg
Texture Baker Settings
https://youtu.be/Xj7hdoKOnKg
Tools for Adding Objects
https://youtu.be/8MqDaigwJCM
Blend Shapes
* coming soon *
Mesh Baker is available in the Unity Asset Store.
https://assetstore.unity.com/packages/tools/modeling/mesh-baker-5017