Do you have Photoshop Elements and Premiere Elements 13/13.1 as well as Elements Organizer 13/13.1? What computer operating system?
Nonetheless, please take a look at the following older thread from the Adobe Photoshop Elements Forum (comments of MichelB) which targets Watched Folder and network drive storage.
Depending on your read of that cited link content, you might want to post your thread in the Adobe Photoshop Elements Forum to take advantage of the specialized Elements Organizer expertise there.
Please let us know the outcome as your schedule permits.