Every resource or activity that you add will have Common module settings. If conditional access and/or completion tracking is enabled for the site, then Restrict access settings are also added. Because each item comes with these settings, let's explain them once, in the following sections.
Under Common module settings, the Visible setting determines if this resource or activity is visible to students:
Teachers and site administrators can always see the item. Setting this to Hide will hide the item from the students. Teachers can hide some resources and activities at the beginning of a course, and reveal them as the course progresses. Or, you can keep an item hidden while you're developing it, and reveal it only when it's complete.