Hi Angel ,
It is generation of employee payslip and Either you can customize the paysilp or use standard forms.
Tcode - PE51.
Customise means - you want add the client logo in your payslip, you need to take help with abap team and they develop the smartforms or scripts and add the logo in your payslip.
Standard forms : CEDT ...
Program : RPCEDT00 or go to tranx code : PC00_MXX_CEDT (XX means your country grouping, if say you are implementing the US , than you can you PC00_M10_CEDT).
Once the payroll is successfully executed, next step is generation of payslip, it inculdes all components which you client want to display in rem statement.
Thanks
Siva