Note: While you can add individual items back into your course, you cannot currently re-add a unit if you remove it. If you have removed a unit and wish to restore it, please contact tech support.
Hover over the unit or chapter you wish to remove and click "More Options," then click "Remove"
Once you remove the unit or chapter you can always re-add it from "Removed content" within Resources. Please read Adding Removed Content Back into a LaunchPad Unit to learn how to do this.