The left sidebar navigation menu

Like many modern left sidebar navigation trees, this menu will collapse down to a narrow column of icons if you click the left-pointing carat on the right side of the bar, but the default on most browsers is for it to be full-sized. On mobile, you might find that it defaults to being minimized. (It's also small enough to be almost unreadable on a phone. I'd recommend that if you're going to be using mobile devices to access administrative functions more than occasionally, you should probably get the Office 365 admin app, available for iOS, Android, and Windows mobile. But a discussion of that app is outside the scope of this book.)