**I found the shortcode at the bottom of the support page referenced in "Descriptions". I used the shortcode and wrapped it with "eyes only". That is a plug in that allows to specify which level users "can see it".
So, I was able to have an open page and only allow higher level users to download certain PDF's. (The two choices of "logged in" or "everyone" weren't always enough of a choice for me for every page.)
Here's the shortcode I found on the other page for anyone's "shortcut" reference: [wpptopdfenh]
eyes only, if you need it like I use it, is here: https://wordpress.org/plugins/eyes-only-user-access-shortcode/
So, this program, because it has a shortcode, I'm hoping will be very useful. Thank you for this plug in! I will try it out! :)