The Find vulnerabilities and required updates and Install required updates and fix vulnerabilities tasks are created automatically, if you do not have ones.
In the Windows Server Update Services group of settings, you can select the update synchronization source:
Client devices will download Windows Update updates according to your domain policy settings. Network Agent policy is created automatically, if you do not have one.
Client devices will download Windows Update updates from the Administration Server. The Perform Windows Update synchronization task and Network Agent policy are created automatically, if you do not have ones.
You can create the Find vulnerabilities and required updates and Install required updates and fix vulnerabilities tasks separately from the quick start wizard. To use Administration Server as the WSUS server, create the Perform Windows Update synchronization task, and then select the Use Administration Server as a WSUS server option in the Network Agent policy.