How to add module position

Hi, new buyer of one of your templates pasta here .
I'm trying to add a module position but i don't understand how.
I'd like to add this new position at the top of the page above the slider position can you help me?
Thanks

P.s.: www.fortunatodemofonte.com/joomla30/ is the site. I use it to make some tests

Learn how to create new positions, layouts and styles for WordPress widgets and Joomla modules.
Adding a new position for modules or widgets to your theme is fairly straightforward. You have to name a position and define where the position gets rendered within the theme layout.
yootheme.com/themes/documentation/developers/widgets-2

So, thanks to your suggestion i've been able to add the position. Now the question is: why can't see the slider after addition?

Sorry, how should I know this?
Maybe you made an error, please look to your website source code and search for the added module position.