What are the functions of the employee subgroup? | SAP-HR

 Employee subgroup is used to define work schedules for employees.
 The following functions are performed by the employee subgroup:
?    Defines the validity of wage  types,  when  employee subgroup are grouped for primary wage type
?    Defines the system  processes for employees  payroll, when grouped with personnel calculation rule
 ?    Categorizes the employees according to their attendance and absence quotas