The Trigger Collider is very simple to use. Add a collider of your choice to an area of your game. In the Collider, select "Is Trigger" and then add the OpenWorldsColliderTrigger script.

Drag the OpenWorldsCSManager from the Hierarchy to the Script, add the model number from the Configuration that you wish to change to, an Optional Particle Effect, and set the Cooldown to 1 or 2 seconds.

The Cooldown setting stops the trigger from repeating as you pass through but allows you pass through again after the time has expired. You may need to play with this depending on how large your collider is.