By default, resources (e.g. staff members) accept at most one appointment at a time. You are also able to configure individual resources to accept multiple appointments simultaneously, for any service that it is configured to be available for.

For example, a tutoring center with ten interchangeable tutors on staff at all times might choose to configure 1 resource that accepts 10 simultaneous appointments, as opposed to 10 resources that each accept 1 appointment at a time.

As compared to creating multiple resources and using a resource group, this features makes it easier to configure multiple identical schedules, although this approach is less flexible in that only one schedule can be set.