I want to start by saying that this is NOT recommended, and that you should install updates as you receive them. They’re important; they keep you safe and almost always fix problems. If you’re OK with throwing caution to the wind, keep reading.
Let’s say you’ve got some tasks running. Maybe you’re processing some large datasets on your home computer, maybe you’ve got some FTP transfers set up and don’t want to queue everything up again, or maybe you need a ton of up time in the middle of the week. Whatever the case is, Microsoft doesn’t care and will restart to complete installation of your updates. A simple change to your local group policy (for Windows 10 Pro users) will let you restart on your own time.