How do you get a trade route to automatically sell in Europe

[SlyFrog]

I know how to set a ship up to bring goods to Europe. But each time it gets there, it makes me manually sell the goods in the Europe screen, manually send the boat back to the New World, and once it reaches the New World ocean, turn on the trade route again.

How do you get it so it just shuttles back and forth on its own and automatically sells the goods in Europe?

 

[Jove]

That's right. You can't.