Select available dates

Is it possible to select specific dates on a calendar and save them as available dates for the customer to see? Right now, there’s only the option to select available days in the On-line booking available days. The problem with this is: if I select Tuesday and Friday, I dont work every Tuesday or Friday in a calendar month. It would be nice to give us the option to select “available dates” in the calendar. Is this option available now, or can it be added to future updates?

https://www.ads-software.com/plugins/salon-booking-system/