Share child account data with parent account users in experience

Question

We have a requirement to share child account data ( Contact, ChildObject1__c and ChildObject2__c) with parent account users. We tried sharing the records by using Account Relationships and it works well if both the accounts are portal accounts. However, customers are now saying they need the records to be shared even if the child account is not a portal account.

Sharing set is already used to share records among the users under same account. So, that is not an option too.

Is there any way to achieve this without APEX sharing? The sharing has to trigger

• whenever an account is made parent of another account.
• whenever a new user is added to parent account.

We have high volume users in communities so dynamically creating a group with parent company, and all child companies and managing records via apex may not be a good option too.

Answer 1

I am trying to implement sharing between community user parent account and child accounts. I need my parent account contacts to see and edit the records of the child accounts. I see you were able to accomplish this using Account Relationships. Can you elaborate more on how you accomplished this or provide a link? Thank you in advance.