Which extension should be selected in conjunction with the address style?

Summary:We are updating our Master Geography data with Loqate Data in support of our GPI initiative. I have several questions about Features by Country specifically, the relationship between Available extensions, Selected Extensions and the address style chosen as I’m unable to find suitable documentation which would provide definitive answers.

In Figure 1, Argentina does not have any available extensions. What is the impact of choosing the Payroll Interface, Human Resources or Payroll as the selected extension? Is the impact limited to whether or not the address style and the address validation are enforced as shown in Figure 2?

(Figure 1)

(Figure 2)