One list, two places
The website and the calendar have to say the same thing.
A guest reads the service on the site and books it in the calendar. When the two disagree about the name, the length, or who performs it, the guest finds out in the chair. Four things have to match, and only one of them belongs to the website.
- The service name. Written once, in words a first-time guest recognizes, then used in both places without a shop shorthand in between.
- The length. The site explains what the appointment includes. The calendar owns the actual duration, because it is the thing that holds the slot.
- The provider. The site introduces the people. The calendar owns who is available, so availability is never described twice.
- Preparation and cancellation. Placed where a guest reads them before confirming, not in the message that arrives afterwards.
Structure only. Your service names, lengths, and providers stay yours to set and to change.