how to adjust current payroll cycle to end by automatically triggered custom payroll report?

Customer need to extend current monthly payroll cycle to end with a custom report Payroll payment details (To be automatically triggered), and after report output is generated, to automatically enter approval cycle. 

How possibly could current payroll cycle be edited in order to add the report generation step and tie it with the flow in order to be automatically triggered by the step before? 

Also, how possibly to make the report enter approval cycle automatically after output generation from payroll application?

Will appreciate your support as this is a critical step in integration issue on one of our customers system.