Use Sharing Sets with Contacts with Multiple Accounts (Generally Available)
Where: This change applies to all communities accessed through Lightning Experience and Salesforce Classic in Enterprise, Performance, Unlimited, and Developer editions.
- Customer Community
- Customer Community Plus
- Partner Community
- Lightning External Apps
- Lightning External Apps Plus
How: In Setup, enter Communities Settings in the Quick Find box, then select Communities Settings. In the Sharing Sets related list, click New. Under Configure Access, set up the access mapping. For the user, select Contact.RelatedAccount, and for the target object, select Account.