How to change the layout on Default Properties Page to a grid layout

Hello,

I am not a master on web development so this topic could be easy for most of you!

Using the Best WP theme and WP properties plugin, I would like to know how to change the layout of the default properties page to a grid layout (similar to avalon but with more rows). I want to keep using Best WP.

Thankyou very much in advance!!

The page I need help with: [log in to see the link]