Help needed to load Employees

Summary

Help needed to load Employees

Content

Hi Oracle Expert,

Customer uses Workday for maintaining employee records.

I would like to load the same employees to Fusion ERP as Business uses Financials/procurement in Oracle Fusion.

What is the best approach to load the employees in Fusion?
Business uses Employee-Supervisor/Position hierarchy Approvals for Procurement/ Financials modules. 
Do you have any template to get the employee records from business so I will discuss with customer to provide the data in respective format.

• Employees records with all personal information 
• Supervisor Assignment
• Position Assignment
• User creation
• Role Assignment

Please provide HDL metadata in which order to load employees to meet above requirement?