Refer to Microsoft document to configure your WSUS server.
Deploy Windows 10 updates using Windows Server Update Services (WSUS)
https://learn.microsoft.com/en-us/windows/deployment/update/waas-manage-updates-wsus
About your concern, Configure Automatic Updates is the precondition of Automatic Updates detection frequency but is not the precondition of Always automatically restart at the scheduled time.
If the "Configure Automatic Updates" policy is disabled, Automatic Updates detection frequency has no effect.
If the No auto-restart with logged on users for scheduled automatic updates installations policy setting is enabled, Always automatically restart at the scheduled time has no effect.
-------------------------------------------------------------------------------------
If the Answer is helpful, please click "Accept Answer" and upvote it.
Information posted in the given link is hosted by a third party. Microsoft does not guarantee the accuracy and effectiveness of information.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.