Board Thread:General Discussion/@comment-106.213.39.95-20131209044748/@comment-7451135-20131210073721

if you open the Trains windows (upper left corner in the game), there are 3 tabs:

You have to select the one in the mid.

From there you can buy International Slots or send I.T. trains.

After you have a slot, click on it and create a train which you can send to a friend/contractor, instead the station.