External Account Hierarchy (Beta)
Where: This change applies to Lightning and Salesforce Tabs + Visualforce communities accessed through Lightning Experience and Salesforce Classic in Enterprise, Performance, Unlimited, and Developer editions.
Why: Like Salesforce role hierarchies, data belonging to accounts in an external account hierarchy is available to the parent accounts in the hierarchy. This way, external users don’t have to rely on sharing rules to access data from their child accounts.
How: When your enrollment in this beta program is complete, enable external account hierarchies in Communities Settings. After you enable the preference, the External Account Hierarchy object is available in your org.