Brainscape classes can include multiple decks. Decks are ordered by creation date by default. We don't currently have a way to group Decks into sub-groups within a Class.
That said, we do currently have a way to re-order Decks within a Class, so take a look!
Still have questions and can't find the answer? Be sure to email our Tech Support Team (firstname.lastname@example.org), or join our Discord channel where you can discuss all things learning, meet others studying for the same exams, and upvote features you'd like to see us add to our tool.
And for more FREE study advice don't forget to check out the Brainscape Academy.