The layouts shown in this menu option are generated from a custom link, the default layouts can be chosen in the administrator area so you don't need to create custom links if you don't want. They are added to the menu to give you an idea of some of the different options available to you.

Jomres does not add php to template files, instead the template files are almost pure HTML, with a little CSS and Javascript added where appropriate. This makes adjusting the layout in each template file extremely easy.