
standing with arm abducted to ninety degrees, maintain ball pressure against wall while performing circular motions clockwise and counterclockwise
Stand next to the wall, elevate the arm straight by the side to 90 degree, place a ball between the wall and hand. Push the ball in the direction of wall, maintaing the push make circles using ball in clockwise and anti-clockwise. Repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.