Search about Walmart payroll structure

I am looking for a comprehensive and detailed analysis of Walmart (Br), Havan (BR), Magazine Luiza (BR) and Renner (BR) payroll structure, presented in the form of a PowerPoint presentation. Specifically, I am seeking information on Walmart’s payroll hierarchy, including details such as who makes decisions regarding payroll policies, how those decisions are implemented, and the complexity of the payroll structures across different departments and locations. The PowerPoint should provide comprehensive information on all these topics, including full analysis of the data, to help me gain a clear understanding of the payroll structure and how it works. Summary for those companies:
Stores Structure - 60%
Suplly Chain - 15%
HR - 5%
Loss Prevention - 5%
Other areas - 15%