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 empty GameObject and give it a unique name. Set the 'Destination Name' in the teleporter component to the name you set or use the dropper tool to link them directly. Put the empty object where you want players to teleport to (the location of the empty object will be where the feet of the teleported player arrive).