A new window opens with choices for the various alarms. Tap on the alarms you want to activate and choose to activate - finish with UPDATE ALARM
You will receive a confirmation that your selections have been saved in the right corner.
Press Alarms in the menu on the left to see triggered alarms.
Note, there will be no alarms if there is an inspection in progress. When checking whether the alarms are working, the Night Owl must be switched on and not under inspection.