Hi @ClydeMorgan ...
I'm not 100% sure that I understand some of the terminology you are using. When you say "assignments files under daily work and quizzes", are you referring to the "Assignments" index page of your Canvas course? (How do I use the Assignments Index Page?) And if so, by chance to you have assignment groups called "daily work" and "quizzes" on your "Assignments" index page? (How do I add an assignment group in a course?)
I'm also not quite sure what you mean by "sub file". Are you asking if you can create assignment groups within assignment groups? If so, that is not possible in Canvas. Or, are you asking if you can somehow indent the names of assignments within assignment groups on your "Assignments" index page? If so, that is also not possible.
Maybe it would be helpful for you to provide a screenshot of your current setup with more of an explanation on what you'd like to be able to do in your course. This might give us here in the Community a better idea of how we can assist you.
Looking forward to hearing back from you soon.