|Working with Organizations / About Organizations and Communities|
Practices may be members of a hospital's community, but unlike hospitals, practices are unable to provide their own communities.
For example, suppose Hospital A is affiliated with Practice 1, Hospital B, and Practice 2. Users in all these organizations are able to communicate with each other because they are all in community of Hospital A.
In addition, suppose Hospital C is an affiliate of Practice 1. In this situation, users in Hospitals A and C are not able to communicate because the two hospitals are only connected through Practice 1, and practices do not provide their own communities.
If Hospital B is affiliated with Practice 3, users in Hospital A and Practice 3 are both in the community of Hospital B, and so their users are able to communicate with each other as well as with users of Hospital B. However, users in Practice 3 and Practice 2 are not able to communicate with each other because those two practices are not in the same community. Hospital A's community extends only to one level, and Practice 3 is two levels removed from Hospital A.