Visualize Account Relationships by Using Account Hierarchy in Lightning Experience

Account hierarchy gives your sales team a bird’s-eye view of the relationships between parent and subsidiary accounts. This feature is now available to Lightning Experience users with a bonus: You can customize hierarchy columns to show the information that’s most useful to your sales teams. This change applies to Lightning Experience only.
Available in: Group, Professional, Enterprise, Performance, Unlimited, and Developer Editions

On account record pages, the Actions dropdown menu includes the View Account Hierarchy action unless you customized the Salesforce1 and Lightning Experience Actions section of the account page layout before Spring ’17. In that case, add the action to your account page layout.The View Account Hierarchy action on a record detail page

Your users can expand or collapse parts of a hierarchy as they navigate it. They can view up to 2,000 accounts from each point where they enter a hierarchy.An account hierarchy

By default, account hierarchies display the same columns as the Recently Viewed Accounts standard list view. But if the hierarchy columns don’t show the information that your sales reps need, you can customize them independently of the list view. In Setup, in the Quick Find box, enter Object Manager and then click Object Manager. In Account, click Hierarchy Columns, and then edit the columns.Using the Object Manager to edit account hierarchy columns

Under Columns Displayed, add or remove fields.Choosing the columns to display in account hierarchies