OK, color me stupid. I thought I knew what a knee lift was (the stick thing that hangs down on the right of the machine that's pressed to start and stop the machine, the purpose being the same as the foot pedal I've used forever), now I'm not so sure.
Knee lift to lift the pressure foot (where is it and why doessn't it get confused with the foot pedal???)
I'm completely lost and can't find a pic or youtube to explain it.