You can do it both ways,but in surveyor you need to give it a name.In driver click on the portal and add to send to user (your name)
Destinaion iportal ID ( what ever you named the iportal )
Send Train ( only within this conputer )
Check for trains every ( i put 60 )minutes )
Drive mode after create ( manual )
This should send the train back to you.
IF you would to send me a train add me to your trainz chat list.