Escalator System (Mechanic)

What would be the best way to create an escalator system that AI could fellow/use?

I’m thinking it would be best to:

  1. Create a stair mesh.
  2. Create a chain of stairs to make.
  3. Make the stair/chain to fellow a path like an spline or something.
  4. Create a new NavMesh type of the AI to use the escalator.