For the first time in a while, I have a Mac machine (a spare Macbook Pro) at home that isn't my primary laptop. I'd like to connect to it with a graphical login, but without disturbing the primary display. This would be trivial using X11 by specifying a specific display number to connect to, but I have no idea how to do it on OS X (Yosemite.)

I've tried enabling both Screen Sharing and Remote Management (though it looks like the latter turns off the former since it includes VNC functionality) and I can connect over VNC, but the behavior isn't what I'm looking for. In particular, if I'm not logged in and I connect, it logs me in on the primary display, and if I am logged in, it connects me to that session. What I want is independent sessions. Is this not a thing that can be done, even with Apple's supposedly fully multi-user remote desktop functionality?