A company currently manages IAM access for its employees manually and seeks to automate this process. They utilize an existing Active Directory system integrated with an external SAML 2.0 identity provider (IdP). The company's objective is to enable employees to access AWS using their existing corporate credentials, with the groups from the Active Directory system being utilized for permission management within AWS IAM. The DevOps engineer has already initiated the setup of AWS IAM Identity Center (AWS Single Sign-On) in the company’s AWS account. What is the next step the DevOps engineer should take to fulfill these requirements?