If a user group has the planning threshold set to 3 days ahead, the notification shall be sent 3 working days before the first unplanned date. For example:
The time of the notification is the start of the schedule in the user's location.
In the event when a user has skipped the initial threshold notification and today is not planned, a notification shall be sent to inform the user that they don't have a planning entry for today.
The time of the notification is 1 hour before the start of the schedule in the user's location.
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