You can run this for two different report types. Approved orders will display orders which have been approved and rejected and will show which user and at what time approved or rejected them. Pending approval orders will only show orders will in the order status pending internal approval and will show users who can approve it.
Click the Admin Cogs along the top bar.
Click Reporting.
Locate the report titled approval audit.
Set and select the following:
Start date.
End date.
Date type.
Report type.
Suppliers.
Site.
Click Generate Report.