I'm planning to setup SharePoint 2010 sites and I will store documents in one place in order to not create additional administrative work.
However, what is the best way to make certain documents in one and the same library be visible and readable to certain people/groups?
I want to store 40 PDF documents in this library and 10 of them should not be visible to certain users. These users should not be able to open these 10 documents if they would get hold of the URL to each of these documents.
How would I best setup this configuration of the library?