When designing a screen, you can drag in the App Ribbons control. This will give your screen the App Ribbons, an example of which you can find when viewing a contact.
However, App Ribbons have no settings, styling, or actions/events.
In fact, no configuration needs to be done to the App Ribbons object, because the data that shows is configured within other apps.
For example, if you want to show activities in the Contacts App Ribbons, then this must be configured within the Activities App, not the Contacts app.
For more information on app ribbons, see our article App Ribbons Configuration.