I followed the above steps, can go to Active Tasks, and can see an upload sitting - but my client still boots into the Fog PXE environment and doesn't image. If there's something I need to do from that menu, I can't find what it is.
The general/common Tasks in FOG include unicast image upload, and unicast image send, as well as a multicast image send. In FOG, sending an image to the server is considered an image upload, and deploying an image to the client is called a send. Both of these tasks can be started directly from the search, list all hosts, and list all groups pages.
To perform a simple image upload, click on the upward facing arrow next to the host. Uploads are only possible on a host, not a group. Uploading an image will also overwrite any image file that may already exist for that host without any notification or confirmation.