To set the earliest and latest times that a booking can be made by your guests, follow the below steps:
Click Settings, Sites, and select the site.
Click Booking Types, and select the booking type.
Scroll to the Availability section.
Set the Earliest Booking and Latest Booking columns.
Click Save.
📌Note: These times need to be within your opening and closing times setting rules. For example, you can't set your earliest time to 8 am if you open at 10 am.