That is my problem Andrew I can not get number one up it starts at number two ?
you have application control active so it wont be under hitch settings. press the application control tab then press the wrench then modify and then you will find forwards/back offset witch is the one you are searching for.
also as another note put your physical length to something like 15 meters as it is just an safety measurement for nextswath but there has been a bug in some softwares versions that you can not put your forwards/backwards offset greater than what physical length is.