In each employee profile in People, information is shown across a number of screens. See Sort and View Employee Profiles.
To go between the screens, click the corresponding item:
To change how the menus appear, click Configure. You can choose to access menus from a sidebar on the left side, or as a toolbar across the top of the screen. You can also choose to use menus or see all items in a flat list that you can reorder. See Customize the Profile Menus.
If the sidebar is collapsed, you can view the list of screens by clicking the expand sidebar icon: