How do I change what feature list a package uses?
The feature list establishes what functions the cPanel account will have. Once you have a feature list setup inside of WHM's "Feature Manager" you can edit the package to use the new feature list. To do this, go to WHM's Home »Packages »Edit a Package. Then, select your package from the list and click on "Edit."
Scroll down to the bottom, and under the "Settings" section you can change the package's feature list. When done, click on "Save changes."