How do I set up a geo-fence alert on the tracker?

Once the car has stayed stationary for 3–10 minutes, send SMS 'stockade+password+space+latitude,longitude;latitude,longitude' to the unit, where the first coordinates are the top-left corner and the second are the bottom-right corner of the restricted area. If the tracker moves beyond this area, it will send 'stockade!+latitude & longitude' to authorized numbers at 3-minute intervals. To cancel, send 'nostockade+password'.