At the top left corner of your Elexoma, there are two output channels, marked I and II. You can use either output channel to plug your treatment lead in (the Elexoma automatically detects which channel is “active”). You will find that the treatment lead fits in one way only. If you wish to use MET on two body areas at the same time, you can plug an MET lead in either channel. If you are using both channels at the same time, please note that you have to DOUBLE the current output to get the desired effect. In other words, if you want to treat two areas simultaneously with 600 uAmp, then you have to set the Elexoma to provide 1,200 uAmp. Rest assured: You cannot shock yourself! Note: You CANNOT run a CES and MET session at the SAME time.