When you have Events in your timeline, you can double-tap an Event to view the Event Card displaying the Title, and the Subtitle and Description if they were added. This view will also show any documents attached to the event.
If you double-tap again on the Event Card it will open the Edit Event window where you can add documents, Tags, and further edit the event. Tap Done to save any changes, or Cancel.
While viewing an Event Card you can tap on the right and left arrows in the Timeline Bar at the bottom of the screen. This will animate you through the Events one by one which can be useful when giving a presentation.