The Project Request Manager template comes with its own Documents library. You can use this document library to upload relevant supporting files for your project requests.
new document.An uploaded document can now be associated with your request in the document library. To do this, you can use the Related Items column which allows you to link files to a form.
Note: You will need to be in view mode, not edit, to add a Related Item.
next to the document in the library and copy (Ctrl+C) the URL in the callout.You will now be able to quickly open the related document by clicking the link in the project request.