To open a day for online reservations, you will need to access your list mode (the first button next to the name of your restaurant on your dashboard)
To open the reservations, click on the Open Day Exceptionally button. The time slots for the day will then open and the reservations will be available online.
Close a specific day
If you would like to close this day, go to the list mode and click on the toggle at the top right of your screen next to All. This will close all the time slots of this service. So, you'll have to do this individually for each day you wish to close and each day's service. You also have the option of closing each time slot individually. Instead of clicking on the toggle All, you can click on the toggles next to the hours that you wish to close. This will block online reservations only for those specific times.
Note: When you wish to close a whole service, make sure to always use the toggle All instead of closing each time slot individually. This will ensure that all your time slots are locked and will not reopen if there are cancellations or modifications made to reservations.