This article describe where to find theSettings Page.You can findSettings, by clicking on your "user name" on the right top corner of your screen.
You will get many options insideSettings Page,throughwhich you can customise you Account.
Site Setupis one of the option provided by the Settings Page. Here, you can edit yourTeam IdandAPI Key. You also getSite Codewhich lets you track customer behaviour on your website and market to them more effectively.