As you learned in the prerequisite THR81 - SAP SuccessFactors Employee Central Core Academy training, the Employee File structure includes Person and Employment objects (HRIS-Elements), including Home Address, Biographical Information, Job Information or Job Relationships, to name a few.
This structure is defined in the Succession Data Model, and the admin tool to view the structure of the Employee File is Manage Business Configuration UI.
One of the most important HRIS-Elements in Employee Central is the Job Information (jobInfo) where we store the Job, Organizational and Position Information details of the employee.
When Position Management is enabled, one of the prerequisites is to enable the position field, which will be used to assign a specific position to the employee being hired, or when an employee changes their position.
A data propagation might occur when position is assigned, to auto-populate other fields in the Job Information, like Employee Class, Regular/Temporary, Cost Center, Department or Pay Grade, based on the attributes from the Position. A business rule will ensure that the data coming from the Position will synchronize to the employee's Job Information.