Block out days on the date reservation widget

I have a reservation form using the calendar widget.  We want to have them only pick Sundays.  Is there a way to block out all of the days that are not Sundays?

Unfortunately, that's not possible with the date reservation widget. Please try our new appointment field and see if that could work for your needs.

Here's the guide: https://www.jotform.com/blog/how-to-schedule-an-appointment/