I'd like to be able to add documents to the CRM module for leads / opportunities in a similar way documents are handled for the Employees module - i.e a button in form that opens a workspace and allows the uploading of documents that can be automatically linked and accessed from the opportunity.

I've looked at the addons but they aren't quite giving me the functionality I require (there could be upwards of 50 files for some tenders that would need attaching). Has anyone done any work along these lines before?

So far I am coming up with needing to manage the files externally and then link a location as a field to a OneDrive folder or something similar for that opportunity - but it would be ideal to manage everything on the same platform.

I'm on version 16 enterprise hosted on Odoo.sh.