User has one server has three instances of SQL Agent installed.
User needs to exclude certain servers from being monitored because SQL Agent is installed but not used.
How to set 'Do not alarm for certain values' for multiple SQL Agent - Status.
Since there is only one SQL agent per SQL Server instance, so you can disable the alarm for the Spotlight connections where the SQL agent is not supposed to run.
To do this, right-click a Spotlight connection in the All Connections list that corresponds to an instance where there is no SQL agent, and select Properties
From the Monitoring tab, select Alarms
In the Editing Alarms dialog, click on the “SQL Agent - Status” alarm.
Check the ‘Override the default settings for the alarm “SQL Agent - Status’ box
Then check the ‘Disable this alarm’ box
The SQL Agent Status alarm should now be disabled for that SQL Server connection.