Oracle recommends that you define or assign position and employee compensation details in the this order:
FTE
Salary grades
Allocations
Define these compensation details first because they drive the budget, and to ensure that you can calculate, and then allocate, position and employee budget expenses.
After specifying FTE, salary grades, and allocations, assign the following optional data and assignments. These details are not required to calculate basic compensation (for example, vacant position expenses can be calculated for positions without employee assignments).
Benefits
Additional earnings
Employer-paid taxes
Employee assignments