Create shortcuts for switch user, log off, standby and shutdown

Right Click on your desktop and select new > shortcut

Copy and paste the text from one of the code boxes and click next

Switch User:

%windir%\system32\rundll32.exe user32.dll,LockWorkStation

Log Off:

shutdown.exe -L

Standby:

%windir%\System32\rundll32.exe powrprof.dll,SetSuspendState

Shutdown:

shutdown.exe -s -t 00 -f

If you want a delay and notification before shutdown, replace the number 00 above with a number in seconds. 00 by itself gives an immediate shutdown without notification.
"-f" forces any running Windows process to close without warning.

Type a name for your shortcut and click finish.

To change the icon right click on it and select properties, click change icon then browse to the location where you have your icons saved. I got mine from here.