I wanna say take different pictures, but I must be missing something... Is this an existing panorama picture you already have? If so, I don't know of any automatic way of doing it, but most editing programs or mobile apps offer a crop mode with pre-set sizes, which you can then export the panorama into (most will try to fit the whole thing into the frame, just zoom out until the height of your panorama matches that of the pre-set frame) and move that around to split into pieces.