Here you have the choice to Add New Employees or edit the existing ones. It shows you a list of all your existing employees. If you want to edit one, just click on their name. If you want to add a new Employee, click on the blue button.

add_employee

This page in Online displays if you click Set up Additional Employees in the Main Setup or View Employees in the Advanced setup, so for convenience, both of those links in the wiki bring you here.