moving this to ePO...
On the contrary, there's loads of logging for this kind of thing
If you go to Menu - User Management - Audit Log, you'll get the entire audit log. Alternatively, there's an entire class of events dedicated to auditing actions in ePO. In the Queries section create a new query, select the Logging group, and then Audit Log Entries: you should be able to build a query to give you what you need.