Sure,
Go to Systems and Event Collection and click the Customize link.
Here you can Create a new Collection of objects that are added to SIM.
Click New > Choose members individualy or if you have a common atribute type switch and select the objects.
Save the collecion in the Shared folder structure and use that collection. You can also create collection of events.
But for this specific type of event there would only be 2 unique events so i did not create a collection for just two event types.