Step 1: On your calendar, click the event and then click Edit event (for events without guests) or More details (for events with multiple guests).
Step 2: In the Notifications section, choose how you want to be reminded about the event.
Step 3: To add multiple notifications, click Add a notification.
Step 4: To remove a notification, click Remove x next to the notification you want to remove.
Step 5: Click Save
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