This may be a very specialized request, but I'm wondering if it's possible to define a specific media library upload path for a certain Custom Post Type? So that the files uploaded to post in this CPT would always be in folders under a fixed parent folder.
It could be either inside or outside the regular wp-contents/uploads path.
I'm looking for this in order to set certain access parameters in .htaccess for the files uploaded to this Custom Post Type.
It is not possible within Toolset, as our Plugins is bound to WordPress standards (compatibility is the main reason).
If you want to experiment with Custom Code, here are a few hints:
http://wordpress.stackexchange.com/questions/76895/different-upload-directory-based-on-post-type-in-a-theme
http://wordpress.stackexchange.com/questions/95829/set-custom-upload-path-for-custom-post-type-only
http://wordpress.stackexchange.com/questions/83248/post-type-specific-upload-folder-in-3-5
But I can not suggest to do it, it might have relevant side effects on the display engine (Types, Views and Layouts), which are looking for images only in the standard Upload paths (also other data you upload).
I apologise that this can not be done with Toolset out of the box, and I can not recommend the approach.
Maybe you can find a solution by using Access plugin and giving Access to Post Types, Fields or Forms only to certain user Roles or single users:
https://toolset.com/documentation/user-guides/#access