
lying on back, use rod held in both hands to assist affected arm elevation overhead to the side and return
Lie on the back with feet on the floor and knees bend, arms by the side holding either end of rod such that palm facing the ceiling. Elevate the affected arm overhead by the side using assistance of other hand and rod, lower the arms back to starting position. Repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.