You asked about app.ScheduleJob() and I pointed you to the only public information about it
app.ScheduleJob() is a Premium Only feature
If you have a current Premium subscription please post a question in the premium group and I will reply with some simple instructions on how to get more information about how the method works
If you don't have a current Premium subscription and don't intend to buy one then the answer is that the feature is no use to you
We don't post explicit instructions about how to use Premium Only features in this group because doing so is inappropriate