Multimodal with Unreal's meta plugin

Hi ! 
I'm currently trying to implement something on Unreal Engine that needs the multimodal feature. I need to track my hands to interact with the virtual environment and use my controllers to track virtual object.
However by looking at the available docs, it seems like there's nothing that indicates that it is possible easily and natively with the metaXR plugin,
I saw that you can do it with Unity or with OpenXR C++ API, so I'm hoping that doing it with the Unreal's plugin is possible just not documented.
Did someone already done that ? Is there a tutorial somewhere that can help me ? 
Thank you