And is there a quick way to make a Test copy of the website? That sounds like a good idea.If your website is XML-based (meaning 'no database is used'), you can install Composite.Tools.XmlBasedSiteBackup, make a backup, downloaded, unzip and run the website locally, for example, with WebMatrix (or on local IIS).
In the screenshot I can see Composite.Tools.SqlServerDataProvider installed. I assume your website is SQL-based? That is, a database is used?
In this case, in addition to the above procedure you will also need to get ahold of the database - export it from the SQL Server in used and then import it on your staging/local server, change the connection string on the local copy of the website etc - just like explained here - Backing Up an SQL-Based Website
The SQL scenario might not be that quick and simple.