a) The bag forming system had been established before the packaging machine shipped out. You just need to follow the item c) and afterwards
Loose the tighten nut of the turning axis(3), and push it into the inner side, loose the right and left baffle ring and move them to the side position, move the right corner bracket(2) to make the film go down vertically. Fine tune the bracket (2) to keep the film uniform and covered by the thermal seal device. And fine tune turning axis (3) to keep the film pictures on the proper position.
b) The left and right location ring on the turning axis will keep the machine work stable, if the bag is not well formed, you can also adjust the left/right location ring.