Teleports are very simple. Create an empty gameobject and add a TTT Trigger Teleport component. It will add the component and a collider onto the gameobject.

Expand the collider box to fit the dimensions of the area that will teleport players.

To set a destination create a separate blank gameobject and give it a unique name. Set the 'Destination Name' in the teleporter component to the name you set. Put the blank object where you want players to teleport to (the location of the blank object will be the feet of the teleported player).