Changing my availability for one day

Assuming you've set up a recurring availability slot, you can adjust your availability for a specific day in two steps:

1. Delete the single instance of your availability for that day
2. Add non-recurring slots if you are still available for specific periods of the day

To delete a single instance of an availability slot:

1. Go to the day on your availability calendar and select the slot. A popup will open allowing you to edit the availability slot.
2. Click the Delete button at the bottom left corner of the popup
    
   
   
3. If this is a recurring slot, you'll be prompted to either delete the entire series or a single instance. Select Delete instance
   
    

If you will still have time on that day to accept appointments, simply create one or more non-recurring availability slots for that day by clicking or click and drag your cursor on a time range for that day. 
Ensure you do not select the This time slot recurs checkbox in the Edit availability popup.