UnclePeteRR ,
When I run one train and have it stop in the station for 4-5 seconds, I use a Lionel 153IR controller (6-14111) placed at the other end of the layout. The power for the track section in front of the station can be turned off entirely from the layout and controlled directly from the IR controller, which allows you to turn the power to the track section on and off momentarily.
It takes a little adjusting depending on how fast the train is running. When the train breaks the IR sensor beam, the power to the track section in front of the station is momentarily turned off. Depending on how fast the train takes to get to the track section and how long you want it to remain paused in the station is what takes some adjustment. Usually about 15-20 seconds will allow the train to reach the "dead" track and sit for a few seconds before taking off as power is restored to the track section.
As I type this, I realize that it is difficult to explain the process in a few sentences ! Having designed it myself, I know what I am talking about, but I do not know if my explanation will address questions from others who may not be familiar with this process !
Trying my best,
Dennis