I have exported a model as Collada from DAZ Studio, and Godot imports it with a skeleton.
But programmatically moving the hand bone does not result in the whole arm moving.
Godot 3.1 api docs mention a SkeletonIK class that isn't present in 3.0 docs.
But that API reference is all there is - there's no documentation on how to use it.
There are two pages for skeletons and inverse kinematics in the 3.0 docs:
But the links to the "latest version" of those fail to load (browser redirect loop).