Are there OpenFOAM CalculiX shell element examples?

Dear precicers,
I’m trying to use the shell element of CalculiX with OpenFOAM for FSI problems. I find that there is no tutorial using the CalculiX shell element. In my understanding, preCICE maps the nodes by their coordinates, so I wonder how should I write the configuration files for OpenFOAM and CalculiX. Should I use the thickness-less baffle in OpenFOAM? Or should I make the interface in the mesh with thickness? And take the mid-face as the coordinates of the shell nodes? How should I set the CalculiX part? Is it the same with the ones using solid elements?
It would be great if there’s any available examples. Thank you in advance.