Navigation mesh

Navigation Mesh

This is required if you want AI to be able to move on your level, this includes using the function AI Move to

1. In the Place Actors panel (Window->Place Actors If not showing), Search for Nav Mesh Bounds Modifier and drag it
   

Into the level

1. Scale it up to the entire area you want AI to be able to move(Scale it up to the entire map if need be)

Generating the mesh

1. After you scaled up the Nav Mesh Bounds Modifier, with it selected hit P

You should see something like the image below

If P doesn't work select the NavMesh object in the level directly

The red circles show how Big I scaled the navigation Bounds, just to make sure it covers the entire map

Bugs

If hitting P doesn't work than you have to select the navmesh Object in the level directly, selecting
it from the outliner doesn't work sometimes