there again, May I know if the "APPOINTMENTS+" is possible

Hi there again,

May I know if the "APPOINTMENTS+" is possible to categorized all services?
For this, I want to happen is if a guest clicks my "BOOK NOW" button and he was directed to the "Make an Appointment" page, the services will be shown are limited that depends on the page that he clicks.

If you want to check, this is the website WEBSITE. I want to happen is when someone clicks book now from "CLASSES" page, the services that will be shown are all services that's categorized on "CLASSES" only.
Is this possible?