Ear834p Question

I recently purchased an EAR834P phono amp and being fairly new to separate phono amps, I'm not really sure about the mm/mc setting button on the back of this amp. The in and out button has markings beside it that indicate mm/mc but do not indicate which position the button should be in for the different settings. A review of the instructions that come with the box was equally as vague. I have a clearaudio Virtuoso Wood, moving magnet cartridge. Can anyone clear this up for me?