View any combination of categories that you want with our feature for Multiple Category Selection.
To turn on the feature for Multiple Category Selection:
Login into your calendar -> Go to Admin Menu-> Options->
Basic Options -> Check the box "enable selection of multiple categories" -> Click Save Button.
Then go back to the calendar and see the change to the select category drop down. This new feature will allow selection of any combination of categories for viewing. Just check the desired categories from the drop down and click the "Go" button.