You could create a template override using this method. Different extension but the procedure is the same.
www.ostraining.com/blog/joomla/how-to-ov...la-component-layout/
If you can hard code the list and divide it into sections using divs, this would be fairly simple.
If you want to automatically generate the columns, here are some references to techniques you can use to do that. I don't know your current skill level, so I don't know if this is what you need or not.
developer.mozilla.org/en/CSS3_Columns
stackoverflow.com/questions/3395586/2-column-auto-layout-by-css
randysimons.nl/125,english/129,multi-column-text/
I don't know of a really simple answer. You might try the RS Joomla forum in addition to this one. It's their design so they will know it best.
I see this is your first post. Welcome to the forum and glad to have you on board!
If this is too confusing, ask some more questions so we can help you zero in on an answer that's appropriate for your current skill level.
Cheers,
Ed