When there is just one event tied to a category the link will go directly to that event. But when there are multiple events tied to a category, the system will display them in the event schedule based on your default schedule view.
Take a look at the different views on the Events page of your site. Click the List, Expanded, Gallery and Calendar icons immediately under the page title and note how the display changes each time.
If you want to change the default for your events:
1. In Spark, go to Events
2. Click the ‘more’ dropdown (next to ADD QUICK EVENT)
3. Select Edit Schedule Views
4. Select a different Default View