You can group together alarms in categories to simplify the identification of the alarm. When the alarm is triggered, the category name is displayed together with the alarm in the Alarms pane, Events pane, Alarm Views, and Event Views. Each alarm can belong to two categories.
Example 1:
You create a category called 'Building A' and add all alarms represented in the building to this category. Another example could be that you create a category called “Door alarm” and select this category for every door alarm in the system.
Example 2:
You create a Category 2 called 'Alarms to Enterprise Central' on an Enterprise Server. You then create an alarm decoration rule and configure the Category 2 of the alarm decoration rule to 'Alarms to Enterprise Central'. On Enterprise Central, you configure an alarm filter to show alarms where the Category 2 property is 'Alarms to Enterprise Central'.
For more information, see Configure Alarm Filters on Enterprise Central Workflow .