Some of these tools (i.e., Discussion Board, Journals, Blogs, Groups, etc.) must first be implemented by the instructor/leader of the course/organization before students/participants can use them.
Instructors/Leaders can also hide any of these features from students/participants altogether by clicking the "Hide Link" button beside the individual tools. Tools can also be made unavailable by going to the Control Panel >> Customization >> Tool Availability.
Note: Be careful not to turn off Content Area features need for the course/organization when using Tool Availability.