Essentially I would like to have a section of a site, separate from the WP admin, that can hold documents for registered users of a certain group to view accessible only by user/password. It would really be nice if the documents themselves could not be linked to or accessed by URL unless logged in. Please let me know of any suggestions!
Hello Maxwell and welcome to WPSE :)
I want to believe that when you talk about:
If my assumptions are (hopefully) correct then you are looking for a Download Manager. There are a few in the WordPress Database and these are the links to a couple of them.
WP-Filebase Download Manager, very well supported with a sync feature. !!
WordPress Download Manager, never tried it but looks quite simple and very user friendly.
WordPress Download Monitor - we use it and are very happy with it. :)
Please have a look and see which one meets your needs.
I hope this helps. Let us know how you do,