here's a basic zip line i put together.
links 2 objects to make a zip line start and end (these objects will be hidden so place them about where you expect the player to grab the line to start / finish and use other objects as the actual wire & poles etc)
name them the same so both objects must have the same name and you can repeat for as many different pairs of zip lines as you wish (and if you want a zip line to be able to go upwards make its strength = 2 otherwise travel will only be possible downwards)
