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# Define trigger

> Learn how to select the trigger type when creating a notification definition.

Learn how to select the trigger type when creating a notification definition.

Open the notification editor:

1. Navigate to **Events notifications entry** in the left navigation menu.
2. In the NotificationCs tab, click **+ Add New Notification**.

Select one of the following trigger type for the notification:

| Option                 | Description                                                                                                                                                                      |
| ---------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| On An Event Occurrence | The notification will be triggered when a specific event occurs, such as Invoice Posted, Order Action Processed, or any custom event.                                            |
| On A Daily Schedule    | The notification will be triggered when the date matches the criteria of a daily-scheduled event, such as Invoice Due, Payment Method Expiration, or any custom scheduled event. |

See [Select a related event](/docs/platform/extensibility/events-and-notifications/notifications/create-a-notification/step-2-select-a-related-event).