Road bike saddle set up

[Ozzie NL]

Crashed last week which damaged saddle (standard Giant issue). Replaced with shiny new Fizik Arione CX.

Did first long ride over the weekend and get the feeling the saddle is a tad further back vs previous.

Would like to move it forward a little but am not sure how to do so without altering the angle of the saddle (from what I can see there is only one clamp under the saddle controlling both).

 

Can anyone provide me with the idiot guide?