Is there a way to do this?
I tried leaving both the menu and title fields blank at the Front Matter, but then the folder’s name (_foldername) is rendered on the nav bar.
In the modular page advanced settings disable Visible to remove the item from the menu.
Thanks! I assume you are referring to the admin plugin? Will get it (re)installed then 
Sorry, I should have said how to hide a given modular subpage from the page’s nav bar…is it possible to do that as well?