Where to replace and configure the background picture "Parallax"

Hi, i need to know where to configure the background picture (Parallax in demo content).

Hello,

It's in System > Site Template Styles > Hot Dogs - Default > Layout > Row Settings (fifth row, where User3 is placed) > Background Image.

Before this, upload your background image (resolution 1920 x 1410) into the folder /media/templates/site/dogs/images so you can see your image on the list.

Regards,
Milos