How does the SkyDrive app in the Win8metro interface switch off or switch users?

Operation steps:
Press the Windows key, enter the Modern UI interface, open SkyDrive, press “Windows + C”, select the setting in the task bar on the right, and then continue to select “Logout” in the pop-up options.
If you want to switch users, you can choose to log out and re-enter your mailbox and password.
Note: SkyDrive account switching is only applicable to win8 local accounts. By default, the microsoft account is bound to the microsoft account and cannot be logged out. If you need to log out, you must create or replace the microsoft account to log in to the win8 system.
as shown below: