The tools which constitute the course work appear in colour in the upper portion of the course home page with the link Deactivate below them.

Deactivated components appear in grey in the lower portion of the course home page with the link Activate below them.

It is up to individual lecturing staff to decide which course components are required for each course.

Deactivated components are still functional and you can still use them. For instance you can upload documents through your documents tool even if it is deactivated. Deactivated only means invisible to students.