You want to edit a document but the Properties icon is not available.
You are at a different site from the site the document was uploaded to.
Identify the site the document is located on the listing page then go to the corresponding site for the document.
In the example above, I’m at the site _ACME Corp which is why Properties icon for Ergonomic Injury Prevention is showing. However, the Properties icon does not show for Health and Safety Policy - Rev 2 – 2015 since it is located at Toronto site.