You show hidden alarms when you want them to be displayed in the Alarms pane or Alarm View.
In the Alarms pane or Alarm View, you can hide alarms to decrease the number of alarms and sort out alarms from the list.
A hidden alarm is still active and changes its state as shown alarms. The only difference is that a hidden alarm that goes back to normal state is still visible in the Alarms pane, if hidden alarms are shown.
In WorkStation, in the Alarms pane or Alarm View, on the Alarm toolbar, click the Show hidden alarms button
In the Alarms pane, right-click the alarm and then click Show alarm .
The alarm is displayed in the Alarms pane or Alarm View when it is in an alarm state.