I would like to get this layout.

hi.. I would like to be able to have photos under the main photo like in this link. The images I am referring to are the 3 under the first imagine in this link.

https://scottgohphotography.com.au/blog/2012/12/how-to-wordpress-pinboard-slideshow/

Id like to get the 3 evenly laid out photos under the slider. I belive Ive got hte right template called ‘landing’ how to I start another box to put pics in? Is it shortcode?
Thanks in advance!