Use the controls pictured below to move the film on the reel. Clicking, holding and dragging the slider in either direction will move the film forward or backwards. The further you move the slider to either side, the faster it will go in either direction.
There are also fast forward and reverse buttons. These move very quickly, so be careful.
There is no mechanized way to move the microfiche cards. use the handle on the tray pictured below to adjust the location of the images.