Yes, of course! We have built this functionality directly into the app. You can specifically set which days or dates of the year you offer delivery. Each day of the week can have it's own delivery time slots.
If you provide deliveries from multiple depots in different geographical locations no problem! You are able to confirm each depots delivery dates and time slots independently.
We've written a help guide on how to configure your delivery slots here: https://storepickup.zendesk.com/hc/en-us/articles/360000679074-6-Limiting-delivery-slots