USB 2 stick safe remove

Hi all,

i’m a new Raspberry Pi2 and OSMC user.
Yesterday i have plugged an USB 2 stick into Raspberry Pi2 to play MP3.
All works perfectly, but when I unplugged the USB stick, the system tell me “Unsafe USB remove”.
I tried to find an option to safe remove USB (like the Windows one), but i havn’t found.
Now the question is; How can i remove an USB stick/device in safe mode from OSMC?

Many thanks