Edit a related custom object record

Open the standard object detail page. For example, if you want to edit a record for a custom object that relates to the Invoice object, navigate to Invoice entry in the left navigation menu and click an invoice number.

Scroll to the Related Objects section. All custom object definitions related to the current standard object are displayed as tabs.

Click the tab for the custom object that the record you want to edit belongs to.

Locate the record you want to edit from the list and then click the Edit Record icon (edit gray icon).

In the displayed Edit Record Information dialog, update the field values as needed.

Click Save.