Modules are used to organize course content by weeks, units, or whatever organizational structure works for your course. With modules, you are essentially creating a one-directional linear flow of what you would like your students to do. Once you create modules, you can add content items, set prerequisites, and add requirements.
Click the modules link.
After creating a new course, module creating option's has been displayed. Click the Create new Module [1] link or Add Module [2] button for creating a new module .
Click the Add module button to create new module.
Enter the name in the Module Name field.
Select the Lock until checkbox [1] to lock the module until a set date. Select the Calendar icon [2] to set the date and time.
Select any modules to the Prerequisite field by clicking the drop-down.
Click the Add Module button to create the module.
View your created Module. The selected prerequisite [1] is added and module unlock date [2] is displayed at the bottom.