Settings (Extension Hub)
The Settings tab specifies whether extensions that are selected for download are downloaded and then installed or downloaded but not installed. This setting applies to new extensions and updates to existing extensions. You might choose to download extensions without installing them if you are downloading extensions to distribute to other users within your organization. You might also choose to download, but not install, extensions if you don't have the prerequisites for running the extensions but plan to get the prerequisites.
If you choose to download extensions without installing them, you can install them later by choosing and Mac, you can install an extension by double-clicking the extension bundle file.. For Windows