Relevant

Changing a template's header is probably the first thing you'll want to do when you get started fitting this template into your site.

To change the header preferences of the Relevant template, login to your Joomla! administration and click on Extensions > Template Manager.
Next, Click on the js_relevant link to enter the template parameters area.

The first parameter here allows you to specify the Header Style -
This setting allows you to choose between a graphic or text based header.
Selecting text is particularly useful for users who do not have an image editing application.
Selecting graphic will render the header.png image which can be edited in your favorite image editing application. This image is located at templates/js_relevant/images/style{x}/header.png.

*style{x} refers to the theme style you have chosen as default (e.g. style4)

The next parameter allows you to specify your Site Headline and Slogan -
You should enter something relevant to your site here, regardless of your header style you've chosen. When text is chosen for your header style settings, Your site name and slogan will be rendered visible on the frontend.
When graphic mode is chosen, the text entered is placed beneath the graphic image code but still remains in tact for search engine optimization.