themes, or templates, are managed through the Template Manager Module,
which is accessed by clicking on Template Manager from the Main Menu.
Template Manager Main Menu
Using Pre-Installed Templates
Selecting a default template
To use a pre-installed or custom template for your website, select
it from the Base Site Templates drop-down box and click on the “Change
If you are using a pre-installed template, or one you have created with
the Template Manager (see below), then you can utilize a Built-In Template
Header. Enter your desired text in the Built-In Template header field,
and then click on the Save Header button to commit your changes.