To change the default Template for the Site (Front-end) or Administrator (Back-end), follow these steps:
You will now see the Template Manager screen.
Note: If you do not see Template Manager listed as an option on the Extensions menu, then it is most likely because you are not logged in as a Super Administrator. Only Super Administrators will see this menu item.
From here you manage your templates for Front-end and Back-end. The default view shows your installed Front-end templates. The default template for the Front-end is marked with a star; in the image below it is rhuk_milkyway.
To change the default template to beez:
the star changes from rhuk_milkyway to beez and you are done.
The image on the left shows the Getting Started page displaying the Beez2 template style. The image on the center shows the Atomic template style being assigned to the Getting Started menu item. The image on the right shows the Getting Started page now with Atomic template style.
Atomic template style being applied to the Getting Started Menu item.