Do you mean with the BSR? I just put the foot on, plug it in, lower the feed dogs, and select the mode I want. Mode 1 keeps stitching even when the fabric stops moving, whereas Mode 2 only stitches when it "sees" the fabric move. I sometimes lengthen my stitch but it depends what I'm quilting.
This might help too:
http://www.berninausa.com/webautor-d.../1-2-3sBSR.pdf