Problem setting up secondary mirrors

Trying to setup a mirror at each school in our district. The mirror deployment goes fine but the second level mirrors do not appear in the drop menu when I try to setup a computer group policy. Also, in File → Settings → Mirroring, I appear to be missing a lot of mirroring config. I only have settings for a port and interval while documentation shows I should have a secondary level mirror config area on that same panel.

What did I do wrong?

I know this thread is a year old, but I am experiencing the same issue. Did you ever figure out how to get the secondary mirror to function properly?