Stair step bind off

I want to do a bottom up sweater and it says to do a stair step bind off. The thing I’m not sure about is when you bind off at the left side the yarn is now away from the live stitches, so do I cut the yarn and rejoin or is there another way to do it?

You always BO at the beg of the row, so do it on the next row. It’s still at the edge of the piece.