*work as set to 1 st before m, slip next st to right needle, remove m,
slip the st back to left needle, pm, m1L, k3, remove marker, k1, m1R, pm,
rep from* one more time, work as set to end
Does that help? You're just putting the marker you already have on the other side of the stitch.
Finding things in the pattern instructions can be like an Easter egg hunt.