Drone question Relevant Port?

[Rasjel]

so first time get into drones.
as i understand i can select a Target Port in the Station. and the Drone will Fly from its starting Point do that Station and back.
now i have a secound selection for Relevant Port. but what does this do?`

the drone can only go back and forth so for what is this secound selection?

[NocheLuz]

It is just as the name implies, the port that is/are relevant to this port. Basically, any port that links to this port (or this port link to them) will be shown here.

That's it. I think it works just like the "All ports" tab but it only shows what is linked to that port in particular.