Here is how you can setup a calendar for a SPA room. To cover the scenario of multiple rooms / therapists, please refer to this article.
What it looks like
How to setup
1. Create a calendar (Path: E-Commerce > Calendars)
Availability: Set opening hours (Monday to Friday, from 10am to 8pm - Week-end 12pm-6pm )
Blocked dates: Add period during which your SPA is closed
Max per slot: 1
Max per day: Depends on your team
2. Associate to a treatment ( ex. Californian Massage )
Open Californian Massage service and click on Calendar
Link: yes, to calendar SPA
Event duration: yes - Set duration of the treatment - Ex. 60min
Availability increments: Depends on your operations. If you set 60min, customers can book every hour (10am - 11am - 12pm...)
Buffer before event: Depends on your operations and time you need to prepare room
Buffer after event: Depends on your operations and time you need to clean room
Extra time: Depends if you allow customer to book longer massage (1h30, 2h...)
Booking rules availability: depends on your operations
Minimum schedule notice: depends on your operations.
3. Associate to all similar treatments at once
Select all treatments, similar to Californian Massage, under E-Commerce > Services
Click on "Bulk action" button
Apply same calendar settings as "Californian Massage"
All your treatments are now ready to be booked.
About "Bulk Action", make sure to select treatments with exact same parameters as the service you are copying - including the duration of the event.