I was assuming that the resources module is some kind of digital library that is available for school staff and students, but I think, I must have guessed wrong.
Can you please explain, what the purpose of the resources module is?
You are right, it is a digital library of teaching and learning resources, except access is restricted to teachers. However, teachers may insert resources into a unit or lesson plan, in order to make them available to students:
Of the two arrows above, the first lets you insert an existing resource, the second lets you create and insert a new resource.