So how do I do this?

[Urgh76]

Wait.. You can do that?!

How would the computer distingush from which one you're controlling though?

Think the moniters on the Nebbachanezzer. They all use the same image, just spanned across three moniters.
Or you know, magic. One or the other.

Oh, so like this?

Exactly, and for the record, I love your avatar.

Why thank you fine sir :3

Now I will kindly ask to move that gun away from my face so we can sort this out like rational gentlemen :3