@TrishaMeyer1 There is a convoluted way to do this where you set a Canvas assignment/quiz to a specific audience, then make that a prerequisite for a later module block, but we've not used it in anger.
Generally Instructure assume that students are in the same Canvas course because they have the same content, which is not always the case for us. By using Discussion or other Canvas Activity/assignment to carry your content, you are able to customise its visibility to specific individual students, to specific groups of students (set up via Peopl) or to specific cohorts (set up as, or imported as, Sections under settings).