Can I allow bookings with no minimum advance notice?

Yes. In My Business → Settings, under “Booking rules”, set “Minimum advance to book” to “No minimum”. It saves on its own and applies to every channel: website, widget, chatbot and phone.

With “No minimum”, customers can book any free slot from this moment on. Everything else still applies: your hours, existing appointments, blocked time and each service’s timing.

Keep in mind:

• If a service has its own “Minimum notice (hours)” (in My Business → Resources & Services, under the service’s “Additional timing”), that value is the one used for that service. Leave it empty to use the general one.
• If you take last-minute bookings, turn on “New appointments” in My Business → Notifications (“Business Notifications”) and click “Save Changes” so you hear about them as soon as they come in.