Hi,
To stop the prompt to complete setting up on Windows 10, use these steps:
Open Settings.
Click on System.
Click on Notifications & actions.
Under the "Notifications" section, clear the Suggest ways I can finish setting up my device to get the most out of Windows option.
On the page, you can also clear the Show me the Windows welcome experience after the update, and occasionally when I sign in to highlight what's new and suggested option to stop Windows 10 from opening Microsoft Edge to display information about the new version that you recently installed.
About the Auto-restart notifications you could refer to the link below:
https://learn.microsoft.com/en-us/windows/deployment/update/waas-restart
Hope above information can help you.