Configure your available delivery slots for customer in the checkout process for available delivery days -
Same Slots : Configure the same slots for every available day by clicking “Use the same time slots for all selected days”. You can add new slot and delete an existing slot like below image
Different slots in different days : Configure the different slots for different available days by clicking “Set different time slots for each selected day” . You need to configure slots for every available day separately -
Don’t forget to click “Save” button at right top corner to save your delivery configuration