We just implemented a solution, based on Forms Personalizations, so you can launch a payslip for a given employee and given period, by one single click.
The Forms Personalization adds an entry to the menu, and starts two more actions. The first action launches a plsql program that starts the actual concurrent program of the payslip, stealing the parameters from the Quickpay form or the Assignment Actions form.
The second action launches an url that opens the pdf payslip in the browser. The url is generated via plsql, and i blogged about that some time ago.