You can't book with us for less than two hours. As this ban?

Suppose you have a 24 hour hourly rental. Create a new tip:

1. Enter a name.
2. Enter the message for the minimum duration.
3. Select a type - Error.
4. Click the Constraints tab.

Set the message to be displayed when booking one hour or less. Save.

The result is a configuration:

Check the result on the widget. Book 1 hour: