Mambo Administration - Global Configuration
The Metadata tab allows you to add meta description for your website as well as keywords - entering these will allow your website to be easily discovered and listed by the search engines.
Mail tab shows Mambo's mail configuration. The default settings work correctly with SiteGround's Mambo Hosting Services. The only setting that you will probably need to change is the sender's e-mail address.
The Statistics tab has three options (Statistics, Log Content Hits by Date, Log Search Strings). If you do not need statistics for your web site, leave all the options to "No".
Information about the other options in the Global configuration tab can be found below: