A service can't exist without a resource to render the service, but a resource can exist and be booked independently. For example, a mobile massage table that your team members need when they do a home visit can be booked when necessary.
Let's look at an example of resources in practice:
Typically, resources are associated with a service. In this example, An initial consultation sports massage needs two resources: Consultation Room 2 (venue), and Katniss (team member).
Resources must be associated with a services to allow bookings to be made. You add and edit resources in Settings > Resources. Watch this short video to see how it's done.