The scenery isnt the teleporter, its just the cover for it to make it look pretty.
To place a teleporter pair in sapien you need to navigate to the netgame flags folder under game data. Right click to place a flag where you want, then change the flag type to teleport from. Then do the same again for the other end, but use the teleport to flag. Note: The team index for the pair must be the same.
For two way teleporters duplicate the one way pair, reverse the flag types, and give this new pair a different team index.
Then you can put pretty teleporter scenery on top
