making stacks move further

Hi guys long term iam a total war player and reader of these forums but im new to posting :)

I have found lots of good advice on editing unist stats and i am having some fun getting this to work !

but what i really am having a hrad time finding is a guid on how to make armies move further on the main world map .
i know how to change the years per turn ratio but i want to make the armies move further per turn not per year

I have seen some mods that say they have done this but as i say have not been able to find out how :(

is this easy ? im a prettyt novice modder but have pleanty of time so if i need to change evry unit rather then one value i can do this

many thanks