Scaling an external recipe

Hi everyone i am about to start my first AG are but i am quite unsure on scaling down the recipe taken from GH's home brew beer book. the recipe is for EK Goldings single hop ale and is to produce 23 its. I want only 14lts finished to beg and bottle. My question is how do i go about this. I have the brew target software but do not understand how to input the ingredients using my equipment profile. Do i enter all the ingredients as mentioned in the recipe with amounts shown or do i need to scale them back before entering. I am willing to try other software if its easier to follow. Thanks in Advance
Peter