I've added bones to this mesh that I downloaded online and for some reason when I move some specific bones it moves other stuff, like eyebrows. I'm not that experienced yet I know a few things here & there, so it would be nice to explain it in simple terms.
There are 4 images showing whats happening https://i.sstatic.net/8VS9d.jpg
(I've seen others mention vertex groups in other threads but I don't know what a vertex group is...)
Cheers!