Plesk

Extensions Catalog – Using Extensions

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.

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.