When groups are included in events, we do not mean to imply that every member of the group participated in the event. For example, although the Argonauts go to Colchis, and should be listed as doing so, Heracles, although a member of the Argonauts, does not go to Colchis. We will want to add a notice or disclaimer of some sort to the user interface to reflect this.

This means that whenever someone is explicitly named as taking part in an event, that person should be added as an individual to the event, even if a group of which that person is a member is also listed as taking part in the event.