The Filecloud icon in the taskbar (Windows) or menu bar (Mac OS).
You find the Filecloud icon:
In Windows, in the Notification area at the right of the taskbar
In the Mac OS, at the right of the menu bar
You can right-click (Windows) or click (Mac OS) this icon to get quick access to some tasks, for example synchronize all Vaults or select files which need to be ignored during synchronization.