Configure Business Manager security settings. Configuring login settings only applies to accounts that haven't migrated to unified authentication. Unified authentication links the login of all Business Manager instances to the Account Manage login. As of 19.5, all new instances are linked to the Account Manager login.
Infocenter Retirement: On June 30, 2023, the Infocenter was retired, and documentation currently hosted on the Infocenter will be published to Salesforce Help, Commerce Cloud Developer Center, and Salesforce B2C Commerce Developer Documentation Resources. For more information, see the release note.