Thanks for your help

Hello,
Same steps you need to follow:
Settings → Technical → User Interface → Website Appointment: Your Data
Settings → Technical → User Interface → appointment_form
Find "Confirm Appointment" and update your text from both views

Hope this helps
Thanks

Hello, 

Yes, this is possible in Odoo.

If you're only looking to change the button label, you can try updating it through Translations (Settings → Translations → Application Terms → Translated Terms) by searching for the existing label and modifying it.

If the label is part of the appointment website template, then a small view/template customization may be required to override the button text.

Hope this works for you! If you need any help implementing this or want a more optimized approach, feel free to reach out for further discussion

Regards,

Zehntech Technologies Inc.

santosh.sekwadia@zehntech.com