To share events with family or friends, use Google Calendar's sharing feature.
- Turn on "Calendar Settings" → "Link Google Calendar" in Smart Planner
- On your computer or in the Google Calendar app, share the calendar with the other person (see Google Calendar - Share your calendar with someone)
- When creating an event in Smart Planner, select the shared Google calendar and save
Events added to that calendar then appear automatically for the people you share it with.
※ Events in the "Local calendar" (the calendar stored on the device) cannot be shared. Save events you want to share in a Google Calendar calendar.
※ If the other person uses an iPhone, they can see the same events by adding the Google Account to the iPhone's calendar.