We recommend categorizing your questions using the same structure you used for your lessons. That said, it’s possible that your questions were also written to test readiness based on learning domain or outcome.
BenchPrep supports this additional layer of tagging. We call it Standard Tags. By default, these tags are backend only, though you can turn on reporting by tags for your students if you desire.
To learn how to add standard tags, reference How do I add tags? article.