Careflo allows you to upload documents in almost every module:
Service users
Support workers
Organisations
Schedule -> Service requests
Information module
If the document is not tied to any of these items then you have the option to upload the document to a document management system such as OneDrive, Google Drive or similar and post the link in Careflo for people to access. Please ensure not to share sensitive documents without strict permissions since the link can be accessed outside of Careflo.
An alternative is to create a Knowledge Base article that has the contents of the document and let people access that.