Hey Fabio,
changing the position of the filter wasn’t envisaged in the theme’s back-end settings; however, I’ve prepared a custom file for you that implements this. I highly recommend doing such customizations via a child theme – please download this archive, unzip it, and upload the resulting file into the child theme folder. If you don’t want to use a child theme, you can upload the file into the main theme folder (/wp-content/themes/Kanso).
Sincerely,
Andrii / Satori Studio