An amenity can be setup to require that a resident must book at least a day or more in advance of the booking date. This setting is often used when some administrative tasks are required to be completed before the amenity booking like booking a cleaner for a guest suite, or a security guard for a party room for example.
Go to your amenity and edit it. Find the section called "Set booking limitations", and locate the "Limit bookings in advance" toggle. Enter the minimum number of days in the input box. For example, if 1 day is entered, this means a resident will not be able to book this amenity on the same day as the booking, only the following day.