You can find the booking form settings and message options on the Booking Form tab in the Time Slot settings. With Time Slot Pro, create custom fields for your form here, as well.
- Minimum time before booking
Set how far in advance customers must book an appointment. Time slots within this window will be hidden automatically on the booking form to prevent last-minute bookings.

- Form messages
Customize the messages shown on your booking form by adding a summary message to display a custom note alongside the appointment details before submission, and a success message to show a confirmation after a successful booking or payment.

- SMS consent message
Edit the label for the SMS consent checkbox shown on your booking form. This controls how customers opt in to receive text notifications. See the SMS doc for full setup and customization options.

- Custom fields
Add custom fields to your booking form to collect additional information from customers before each appointment. See the custom fields doc for field types, setup, and display options.