Locate the calendar icon
and select the "List View".Adjust the filters on the next page, set the date you want to cancel all the appointments and then click on "Apply Filters".
Once the filtered appointments appear, mark the checkboxes on the left for the appointments you want to cancel
Click on "Bulk Actions" on the top right part of the page and then "Set status to: Cancelled".
Keywords:
bulk cancel, cancel multiple appointments at once, cancel all appointments