Leckey KIT User Instructions page 33

To adjust the angle of the whole shoulder
support, loosen both the screws (B) on the
ball and socket joint. Position the support at
the required angle. Retighten the screws.
B B
To adjust the angle of the wings of the
shoulder support, loosen both the screws (C)
at the hinges. Contour the shoulder support to
the required shape. Retighten the screws.
C