A company has registered a public domain, example.com, in an AWS account managed by a central services group using Amazon Route 53. They want to create a subdomain, test.example.com, in a separate AWS account to provide name services for Amazon EC2 instances hosted in that account, without transferring the parent domain to the subdomain account. A network engineer sets up a new Route 53 hosted zone for the subdomain in the second account.

Which two actions must the network engineer perform to achieve this?