Stand relaxed and slowly with the breath tense and relax your entire body. Have a partner come to you and hold an arm or body part and start walking and your job is to move with him so there is no tension in you and no change in alignment. This means you do not get dragged or pulled and your spine is erect and free to move. After a few times with this add placing the free hand or both if a body part is taken on your partner and make this move obvious in order to capture his attention and focus. After a few times doing this simply add another direction to the movement and move both hands/arms on his body (use the legs as well if it feels right and mind the distance between you) in order to change his alignment and bring him to the ground after you are free to move. Remember to avoid getting dragged to the ground yourself and to let the breath start the movement. Let the arms follow the movement of your body which is walking and change the direction your eyes are looking. This way you will naturally feel more free to move and your own focus will be more in you than in your partner. Another note is to avoid freezing your arms on your partner and shaking him to get him down. Let the arms move in two different directions as you walk and remember you have two hips and two shoulders aligned.