Paragon Phase link - how to setup

Hi i have been trying to understand how phase’s link particle works. I have tried all i could think off but i cannot do it.

I can’t figure out how to set up the Particle system so i can see the link between phase and a target. Anyone tried this and could tell me how to do it? what particle system is the one for the link and what params to set and where to attach it to make it work?