If you want to copy an alarm setup from e.g. temperature, press “Add alarm” (A)). Then tap the Duplicate icon (B)
Afterwards you can see the other gauges, that are associated with your account and you can put a "tick" next to the gauges, that shall have the same alarm.
If other alarms have been set up, e.g. "no positions for more than 2 days", you are copying this set-up the same way.