Currently it is only possible to upload a citation thumbnail image in the Leganto interface (Librarian view) when the instructor file upload parameter is set to allow instructors to upload, i.e. maxfilesizeallowedfaculty_MB is not zero.
It would be useful for Library staff to always be able to upload/edit the citation thumbnail image, and for this to be separate from any instructor-only configuration.

It would be particularly beneficial as part of enabling Library Staff to check and manage lists, in their own view in the Leganto interface.