 However, the most important usage of this term in ballroom dancing is to describe steps when a foot moves across the standing foot, while the torso moves in the same direction as the moving foot without rotation.CBMP is routinely used in steps taken in promenade position or outside partner step in order to maintain the relative body position of the couple.CBMP and CBM often occur together in turning steps commenced outside partner or in promenade, but in such case the CBMP is required by the commencing position and is not a result of the turn.