If you have setup a VM within SCVMM and didnt select use hardware assisted virtualization during the setup process of the VM, then there is no where in the GUI where you can set this afterwards. To overcome this you need to run some powershell and here’s the code!

$vmguest = get-vm Server001 -vmmserver SCVMMserver01
set-vm $vmguest -usehardwareassistedvirtualization