Installing a feature set is very much like installing a package from the Unity registry, except that you look for feature sets under the Features expander, rather than the Packages expander:
Open the Package Manager window and select Unity Registry from the PackagesPackages are collections of assets to be shared and re-used in Unity. The Unity Package Manager (UPM) can display, add, and remove packages from your project. These packages are native to the Unity Package Manager and provide a fundamental method of delivering Unity functionality. However, the Unity Package Manager can also display Asset Store packages that you downloaded from the Asset Store. More info
See in Glossary drop-down menu.
From the details view, click the Install button.
When the progress bar finishes, the feature set and all its packages are ready to use.
Click the QuickStart link in the top right to discover more about this feature set and how you can use its packages together.
Note: If you need to remove the feature set, open the details view and click the Remove button.