After adding virtual machines as managed nodes in Azure Automation State Configuration, what is the next step to configure the managed computers in Pool7?

The correct next step is to modify the ConfigurationMode property of the Local Configuration Manager (LCM). After adding virtual machines as managed nodes, the LCM on each node needs to be configured to apply the desired state. The ConfigurationMode property dictates how the LCM applies and monitors configurations (e.g., ApplyAndMonitor, ApplyAndAutoCorrect, ApplyOnly). Without setting this, the nodes won't actively pull and apply configurations from Azure Automation State Configuration. Modifying the RefreshMode property is incorrect because RefreshMode defines how the LCM retrieves configurations (e.g., Pull, Push), which is typically set during initial registration or by the pull server. Running Register-AzureRmAutomationDscNode is incorrect as this cmdlet is used to register a new node with Azure Automation State Configuration, which has already been done. Installing PowerShell Core is irrelevant to configuring DSC on existing managed nodes.