Allow "Unassigned" Policies to Be Created

It would be useful to be able to create a policy that does not need to have any identity assigned to it, yet still allow me to save the policy for later use. For example, I have a policy that I've created to enable applicable computers to be able to browse Blogs and Video Streaming categories. Once in a while, if a person needs access to that to view training material, I can temporarily place their computer (Umbrella Client) into that policy. But when they are done, I'd like to remove them but keep the "empty"/unassigned policy.

My present workaround is to assign the "Mobile Devices" group (which we don't currently use) to otherwise unassigned policies so that I can hang onto them.