To remove gap appointments from the Short Notice List by means of appointment book context menu
Right-click the appointment and select Remove from short notice list:
If the patient has multiple appointments, you will be prompted:
To remove appointments by means of the Best Suited Gaps tooltip
In the Short Notice List screen or the Short Notice List tab, mouseover the relevant Patient details to see a tooltip of appointment book gaps suited for this patient over the defined Short Notice Period:
Use the Remove Patient from List button to completely remove the patient from Short Notice List considerations.