Hi shine095,
Yes, you can place a limited number of passengers (about a half-dozen) on both PoR and Titanic, but only in specific locations.
The Mission Editor Tutorial, in the section on Taxi waypoints, explains how to place passengers.
You can download that tutorial from here:
http://80.95.161.114/shipsim/forum/index.php/topic,2886.0.html (http://80.95.161.114/shipsim/forum/index.php/topic,2886.0.html)
You need to register an SS08 key in your forum profile to access that document.
Regards,
Marty