Second low alarm to go off when the glucose value is lower than the low glucose alarm.
Second high alarm to go off when the glucose value is higher then the high glucose alarm.
Alarm when by falling glucose the value will soon be below value.
Alarm when rising glucose will be soon above a value.
Schedule a certain profile to become active at a certain time of the day. This way you can use other glucose threshold or ringtones during the day and night, or automatically turn off speaking glucose values at night.