We usually create a contact sheet and upload that to Proof, rather than the images themselves. Having multiple to a page makes marking up selections easier.

I believe that documents inherit the project's access, but because they are a separate object the access can be customized at that level. You can change folder permissions by selecting the folder, then the 3 dots and "Share". If you have multiple folders, they could each have different access/permis...

We sometimes do an internal review, and we use Workfront Proof for all creative reviews. We found that other users were sometimes curious or snooping, opening those proofs and adding themselves to the proof workflow. (side note - that happens on 'official' reviews as well, users who aren't part of t...