I am using a marker in a knitting project for the first time. I haven't had any instruction about how to use markers. I am using a "ring" to place at the required spot. When I get to this marker after knitting the rest of the row, turning the piece and knitting back to the marker, do I then take the marker, which is on the left needle, and place it on the right needle? And, if so, how does this mark the spot? Isn't the marker MOVING up the piece of knitting every time you transfer it on to the right needle from the left? HELP!!! What concept am I missing?