There are days where you have special requirement or want to setup a different time then your regular schedule. Appointo can help you achieve that.
Here's how you can set this up on your end:
Head over to Appointo > Appointments > Manage(For the same product/event) > Show > Scroll down to 'Add Date Overrides' below the weekly hours > Click on the '+' next to it > Add the availability for the specific date and time and click on Apply > Save.
Here’s a short video explaining the same: