Like throughout the realm of Skyrim and it's strange encounters. How do I make modded NPC's travel?

Because I want to create a neat CK package based on a specific hostile organization traveling throughout Skyrim rather than just ambushing one area and stay there. i want them to spread throughout the territory.

Is is an AI package that I need to link or is it more towards a marker? Right now I only know the rules about patrol markers. That's it. But that isn't what I wanted