Having Static and Dynamic Nav meshes

Hi there, I’m making an open world game, my map will have places that will always have AI moving around like towns, and place like a forest that won’t. I want to have Static nav meshes for these towns and I want to also have a navigation invoker for AI that will be roaming outside of these town areas. Is it possible to have static and dynamic navigation areas, if so how? If I set runtime generation from project settings to dynamic I can’t use static navigation.