Boy...there is no way I have ever been able to figure out how to sew with that button! I learned with the knee lever, and then the foot pedal. I'm also a two handed sewer. I hold or place my left hand guiding, holding, flattening, and my right hand is feeding/adjusting the fabric...so there is that! I'm going to have to find some videos, to figure out how to use it! Confusing concept to me.