By default, Document Management (DM) is switched-off.This is to preserve the user experience for non-DM users.
To start using DM, first read the short section on 'how it works', so that you understand what eaDocX will keep in your model.
It's important to understand that, unlike eaDocX Professional Edition which never updates EA, eaDocX DM will add some new elements to your model, which allows it to keep track of which documents & versions you have created.
Set up your model and documents for DM at EA | Specialize | eaDocX | Document Management | Setup Document Management.