You certainly are able to set a notice period where no new appointments are made within 24 hours. This can be done with the following steps:
- Log in to your JRNI account.
- Click Configure.
- Click Edit under Services.
- Click Edit alongside the service you wish to edit.
- Click the Time settings tab and edit the Minimum cancel.
- Change this to 1 day, and click Save.
If you preview your public calendar now, you will see that you're unable to book on the same day. A quick calendar preview can be seen by clicking Widget in the upper right-hand side.