Do you mean Bernina 830? If so, I thinkit has dual feed like a Pfaff, which is a built-in walking foot. You don't have to add a additional foot. My Pfaff has the same thing, they call it IDT. I just pull down a small black item at the back of the presser foot. Ask your dealer how to use your dual feed, for the price the Bernina 830 costs, it certainly entitled you to some questions asked. Didn't you also get free classes with the purchase of your machine? If you can take them, I think a lot of your questions will be answered. Also, READ your manual. I do have to admit, the manual that came with my Bernina was not as complete as the ones I have gotten with my Brothers. Brother has the best manuals of all my different machines.