Zenith Remote Control

[VA561]

I have a '64 Zenith console, "The Chancellor" with a 25LC20QS chassis. I have the correct space command 400 remote for this set however this remote was bought separately. I am trying to find out how to get the remote to function with this set. I am enclosing a picture of what I think is the remote section on the back of the tv. What is the manual/automatic switch at the top? I couldn't find anything in the sams about this. A picture of the remote is in the nearby vertical centering thread. Any help appreciated. Also an unrelated issue, I can't seem to fine tune the picture. Regardless of which way I turn the tuning knob, it seems to have no effect.