[ovirt-users] Affinity Labels in 4.4

Can anyone explain how affinity labels work in 4.4? I created a label containing a host and a VM. I had assumed that would require the VM to run on that host, but the VM continues to run on any host in the cluster. I then checked the 4.4 documentation and it says that I need the filters module section of scheduling policy to contain Label, but there's doesn't appear to be a filter called Label. Am I missing something?