Okay, you have installed an extension - now what? This depends on the
extension in question. Some Plesk extensions can operate out of the box,
and some require configuration before they can be used. The way you
operate an extension and take advantage of the functions and features it
provides varies from extension to extension.
- Some extensions (for example, “Skins and Color Schemes”, “Plesk
 Migrator”) do not add any additional controls to the Plesk interface.
 To take advantage of their functions and features, you need to click
 Extensions in the navigation pane, go to My Extensions, and
 click Go To Extension.
- Some extensions (for example, “Docker”) add controls and buttons that
 only the Plesk administrator can see.
- Some extensions (for example, “Ruby”, “Node.js”) add controls and
 buttons that are visible to the Plesk administrator, resellers, and
 customers.
- Some extensions (for example, “Plesk Cgroups Manager”) integrate with
 subscriptions and service plans, adding additional controls that can
 be used to regulate the availability of the functions and features
 provided by the extension to individual reseller and customer
 accounts.
If you are unsure how to use the extension you have installed, read the
extension’s documentation or contact the extension’s vendor. If you have
installed an extension but are unable to make use of one or more
advertised features, make sure that you are running the latest version
of the extension and update it, if necessary.