How to link a document for example to a work order with System.FileDocument

Hello everyone, I have a (hopefully) simple problem.  UseCase: I have an Application where you can manage your work orders. For each work order you get several documents (pdf). I would like to upload the pdfs and link them directly to the work orders. So if I am in the work order to get specific Informations I want only to see the linked documents. Unfortunetly I have not found yet a way to link the documents to specific objects. I am missing something?   Add: With the widget File Manager it is possible I just saw but I want to upload multi documents and use the Marketplace widget File Dropper for this use case.   Thanks in advance!      
1 answers

You should be able to set an association directly from the widget itself:


That should save the association upon upload.