https://youtu.be/GDQmdsZWgVE?si=anfZDZvvU9-lHZc8

1.) AutoRig: Smart => Get Selected Object, set Neck+Co Markers
2.) Click Go
3.) Adjust Bones
4.) Click "Match to Rig"

5.) Tab "Skin": Mark Mesh, Shift-Click Rig, Click "Bind"