Procedural skinning mesh

Hello
In the project I’m working on, animated 3D objects are generated in real time (weighed mesh, skeleton and animations). The mesh is quite different from the traditional one (it has an structure including several components that are different from a UE4 mesh). Therefore, I need to create my own VERTEX SHADER. I can’t find documentation that is sufficiently detailed about this subject, neither samples.
Any help will be welcome.
Thanks a lot!

I can’t believe !
I can create and run a Compute Shader, but I can’t create a Vertex Shader. Why?
Awesome !!