The alarmBlock has an option to select a variable that triggers from the "Select a variable" dropdown. 

The block contains both inflow or outflow gates (the teardrop shaped links). This means that the alarm block can be triggered by a link, and can, in turn, trigger further actions, like sending an email for example.

By default, below the gates are the following fields:

alarmText: - This will be the title of the alarm. 

instructions: - Here the user can input a few instructions 

priority: - Optional. It is a number type value.

Further down, the Add tag option, allows the user to add further tags as needed