Thank you for your interest in the TIS Snow Effect.
The machine itself only listens for the owner, so once you have rezzed the machine, to hide the machine type directly into the main chat window:
To make the machine visible again type:
The machine can also be switched on and off by the owner only by simply left clicking it.
For best results, after rezzing the machine, raise it about 5 meters above the ground so that the "flakes" look more realistic!