How to set gallery horizontal and vertical position

I install reflex gallery.. and I need to see at list 5 thumbs in each section.. but the gallery comes vertical position not horizontal.
Can some one help me?

https://mediateca.ch/wordpress/

I update version 2.2 to Version 3.1.5 and now I can see only one thumb by section.

At list with the old version I so 5 thumbs by section

What I need to do to see 5 thumbs in each section. https://mediateca.ch/wordpress/

thanks for help.

I resaolved

thaks