Requirements
You can choose which content is required for students to complete a module. Choose from the Complete All (with or without sequential order) or Complete One requirements.
Read about how to set up requirements in your modules: How do I add requirements to a module?
Prerequisites
You can make modules available upon completion of a previous module's requirements by using prerequisites.
To learn how to set prerequisites and avoid common pitfalls, read How do I add prerequisites to a module?
Video Tutorial (2:50)