Using Atomcal every event title is treated as a separate "activity". This activity (for example, "Meeting with Sales Team") can be attached to another event later on.
By attaching same activity to different events using Atomcal we are able to generate summary of how every "Meeting with Sales Team" goes. Combined with event notes this allows Atomcal to become a powerful catalog tool to search and find answers when needed.
For example, tracking how often an activity is performed, who joins it and when, what tasks and todos were performed, etc, can be found on the Activity page.
Although note that viewing Activity page is a work in progress for now.