This setting is part of your Scheduling rules. You can determine the minimum amount of notice that is required for scheduling appointments. For example if it’s 8 hours, and right now it’s 10:00, people won’t be able to schedule appointments before 18:00.
Step-by-step guide:
- Go to your Admin page.
- Go to Settings > Scheduling rules.
- Navigate to “Clients can’t schedule within [ Number ] hours / days before an appointment”
- Change the number of hours.
- Save when you're done.