Yes, you can set this up just in MarginNote’s interface, though without the smart folders feature I referenced.
But I’m talking about having this structure mirror MarginNote’s iCloud folder management system.
I believe the current MarginNote iCloud folder management system centers around the Documents mode; not the Study mode.
@marginnote3 / @Leah_Support-Team / @Support-Team - please feel to weigh in on this. (I also posted this on the Discord forum, but haven’t heard back from any yet.)