How do I prove my people have read a procedure?
Assign the document as a must-read by role; every reader confirms in Oanax, with a name and a moment. That overview is your evidence.
In Oanax you turn the document into a must-read and attach it to the roles that must know it. Everyone holding that role automatically gets it in their own task list — including whoever joins later.
The reader confirms in the system that the document has been read. That confirmation is fixed with a name and a moment, and you see in one overview who has confirmed and who has not yet.
When the procedure changes, the new revision supersedes the old one and you decide whether everyone must confirm again. Your evidence always points at the version that applies now — and the auditor's question becomes a screen, not a search.