What are two specific ways that local government ceo and/or department leaders can use these three reports to better understand their operations and ensure program service delivery to community constituents?

Page 474 notes three type of budget performance reports:
an expenditure budget status report
a revenue budget status report
a performance status report
What are two specific ways that local government CEO and/or department leaders can use these three reports to better understand their operations and ensure program service delivery to community constituents? Cite specific references in your comments, as appropriate.
Please answer in a brief couple of summarys