Install the package through the
Extension Manager of the Joomla administrator's console. It will install the Sesame Pay for Access component, all associated module and plugins and the Simplify Your Web Extensions library.
Install from Webtab of your website. Type simplifyyourweb in the search box and select Sesame Pay for Access.
The extensions library is not required as a separate download. If missing or outdated, the library will be automatically installed.