Currently using Creator 5.  In this article, it explains how to change the Display Type of a subform to either "Grid Subform" or "Popup Subform."  

The article gives this picture as an example:

However, in my existing subform and any new subform I create (either blank or based on an already created form), it only ever shows up like this in Field Properties:

Is there a way to change it that I'm not aware of?  Or is there a chance I misclicked some sort of setting to make it not show up?  Thank you for any help.