In order to adjust the angle of your saddle on the Atom or the Next Generation Atom you will need to loosen the allen key bolt on the side of the saddle where you can see small measurements. The size of allen key you will need is 5mm. This will enable you to adjust the angle of the saddle, up or down.
In order to adjust the fore and aft movement of the saddle, you will need to adjust the horizontal allen key bolt at the back of the saddle.
Please see the video below which illustrates this: