Relation Resource - What are operating hours, non-working hours, and work hours?
Non-working hours can be set at 2 levels -
1st, Company level, like Christmas can be a holiday for the company
2nd, Service Provider level, for example out of 10 service providers (team members), one is on vacation, so this is the non-working hour for this service provider only.
Non-working hours can be created by selecting a period of time within the Calendar.