Time of creation is "Interval Adjustable", Interval is a day (1:00:00:00) and Start is 12:30:00.
MU selection is "Sequence Cyclical" and the assigned Table has a single row with number 450.
Build a model consisting of Source and Drain. On the tab Statistics select the chechbox "Creation Table".
Run the simulation and check the CreationTable. Oh yes, I forgot to select the checkbox "Generate as batch".
In other words, 6 settings. The attached model file if for Plant Simulation 12 or later.
You can use the delivery table in the source to create the objects at a specific point in time.
Open Source-->Attributes Tab-->Time of creation-->DeliveryTable
Once you select delivery table drag and drop a tablefile in the Table filed at the bottom. The tablefile will automatically format based on the DeliveryTable format.