Reporting on Expense reports

Summary:

we have 2 audit requirement relating to expense reports created by privileged admin users. We do not audit 100% expense reports due to business requirements and size of team. We therefore have been asked the following:

1. to run a report prior to payment run, to review upcoming expense reports to find if any sys admin users have raised claims and to confirm they have been approved and audited appropriately. is anyone aware of a report to use?
2. we have also been asked to run a report at the end of each month to show all expense reports created. is anyone aware of a report for this purpose?