Movement on campaign map

I am trying to make it so that on the campaign map captains cannot move very far and need a family member/general to move long distances. I already have the hidden trait for the generals but I can't figure out how to reduce movement points for captains on the campaign map.

descr_characters.txt change the base movement for all character types, note that this will also affect diplomats, spies, assassins and admirals.

You can add the hidden trait to diplomats, assassins, spies and admirals too.