# From Waiting List
In instances where a specific doctor has no available appointment slots, staff can utilize the waiting list feature to add either new or existing patient appointment.
When an appointment slot for the doctor becomes available, users can use drag-and-drop feature to transfer a card from the waiting list into the newly opened slot. This functionality reduces the risk of wasted appointment time, enabling healthcare facilities to optimize their schedules and serve more patients efficiently. For further details, please refer to the [**Waiting List Management** ](/uniteemr/application-modules/scheduler/waiting-list-management.md)section.
{% hint style="info" %}
Once a patient is moved from the waiting list to the main scheduler, they cannot be moved back to the waiting list.
{% endhint %}
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