I've been following this tutorial: https://www.youtube.com/watch?v=O5JtP8AZKhU&t=5s It doesn't address, and I cannot find any documentation on how to make only a part of the mesh a softbody.
For example, what if I wanted only Suzanne's ears to be floppy? Not the rest of the head? I am using vertex groups to separate the soft/not soft parts of the mesh, but it's not working right.