OT: Trainz Question

I know a number of people here run the Trainz software from Auran so maybe someone can answer a question. In the tutorials under the Driver portion of the program, how do you know when you've finished the tutorial? MS TrainSim has window pop up and lets you know when you've completed a tutorial or scenario in it but I haven't gotten anything like that in Trainz yet. I've delivered trainloads of coal over and over to the power plant in the first tutorial but nothing ever tells me I'm done and to move on to the next tutorial. The waybill screen says the demand for coal goes away but then after a period of time it comes back again. Did Auran leave these tutorials open-ended? That would seem to be a big flaw to me. I'd like some indication, like in TrainSim, that the job is complete. Do all of the scenarios under the Scenarios section of the program do the same thing? I haven't tried any of those yet.