Those familiar with GPO on Win7 and Win8, in Win10 Pro (ONLY PRO) can modify a few entries in the following area to change Win10 update behavior...
Computer Config > Administrative Templates > Windows Components > Windows Update
Here, you can select "Configure Automatic Updates" and set a scheduled time, as well as how updates are fetched.... If one wants to, they can disable updates entirely by changing both the "Do not connect to any windows update internet locations" as well as "Specify intranet Microsoft update service location"
However, changing these settings unless you are very familiar with how the internal componenets of the OS is very dangerous, and can break many things. Be careful if you ever venture into the Group Policy Editor, because it's essentially editing the registry directly, and you can, if you select the wrong components, lock your self out of your PC... For good... Ask me how I know. 🙂