To use Windows Server Update Services (WSUS) to install product updates, you need to either manually approve them for installation or use the automatic approvals option, which doesn't allow you to choose which updates to install. Here's a PowerShell script that automates the approval process for only those product updates you want to install.
John Savill's Hyper-V Master Class
Join John Savill for 12 hours of comprehensive Hyper-V training. This master-level online training course will explore all the key aspects of a Hyper-V based virtualization environment covering both current capabilities in Windows Server 2012 R2 and looking at the future with Windows Server vNext.