Although you had to share the whole calendar,you can also let people know about an event.
Now,there are two ways you can share events with people
convenient for sharing multiple events with different groups such as family, friends, coworkers, etc.
convenient for sharing single event such as a party. Event hosts can select one group at a time and can be changed per event. After creating an event,just share and say "See the event page".
This allows you to create a list and add members whom you often share events with
(Added members need to accept the invitation).
keywords: shared event