Change Alerts preferences in Calendar on Mac

Account

Choose the account whose alert preferences you want to change.

Events

Choose a default alert for new events. Choose None if you don’t want a default alert.

All Day Events

Choose a default alert for new all-day events. Choose None if you don’t want a default alert.

Birthdays

Choose a default alert for birthdays (in the Birthdays calendar). Choose None if you don’t want a default alert.

Use these default alerts on only this computer

Use the default alert settings on only this Mac, and not on other devices where you use Calendar.

Time to leave

Receive notifications when it’s time to leave for events whose info window includes a map. You receive a notification based on your likely location before the event starts, the event’s location, and current traffic or public transport conditions at these times:

• Before you need to leave

• When you need to leave

• If you’re running late

The time to leave is calculated based on the preference set in the Maps app using the View > Directions menu.

See Add location and travel time to events.

Show shared calendar messages in Notification Centre

Receive notifications in the top-right corner of the screen when there is an invitation or a change in a shared calendar. Use Notifications preferences to choose how and when Calendar notifications appear in the corner of the screen.

If you deselect this option, you still receive notices in Calendar or by email.

See Share iCloud calendars on Mac and Share individual CalDAV calendars on Mac.

Show invitation messages in Notification Centre

Receive event invitation and change notifications in the top-right corner of the screen. Use Notifications preferences to choose how and when Calendar notifications appear in the corner of the screen.

If you deselect this option, you still receive notices in Calendar or by email.