EDIT - I had the policy set to not run between certain hours. All is good.
I have a policy setup that should force a Mac to update via Apple Update Servers but I cannot get the policy to trigger. My test machines say the policy is applied however it doesn't appear to be running. I left a machine sitting for 3 hours and no updates were installed (machine definitely needed updates). The message I have set did not pop up. I am sure I am overlooking something here. We don't have a SUS, we simply just want to force our Macs to update to the latest version of the installed OS every monthly patch maintenance windows.