Bring all the elements in activity.detail up a level to be peers of Reference. If this is not acceptable, at least bring goal, scheduled[x], and performer up to the level of Reference. In doing so, you would want to add a rule stating that if an element of Activity exists in the referenced Resource, the information in both must be the same.

This recommendation is a part of three separate recommendations (Make Activity a Separate Resource, Allow activity.reference to reference any resource, and Eliminate activity.detail), each of which would improve the usability of CarePlan for coordinating care between providers and between providers and patients. Without these changes it's very difficult to display the patient's upcoming schedule, or a list of activities one staff person or caregiver is responsible for, or a history of what has happened to, by or with the patient in the past. With these changes, these actions become a snap: Select all the Activity Resources for the desired time period, or for the desired performer. They also allow the patient's care plan to be the flexible always-changing collection of actions and events that care plans for people actually are.