1.despite those 10 computers never online on Monday, they can also get updates if you enable Configure Automatic Updates and WSUS related GPOs.
2.I suggest to Enable Configure Automatic Updates and select 4 – Auto download and schedule the install, then according to your demand choose the following settings. You can specify the schedule by using the options in this Group Policy setting. If no schedule is specified, the default schedule for all installations will be every day at 3:00 A.M. If any updates require a restart to complete the installation, Windows will restart the computer automatically. (if a user is signed in to the computer when Windows is ready to restart, the user will be notified and given the option to delay the restart.)
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