Embedding Custom Press code into current theme.

Good afternoon!

I am in awe of the Custom Press plug-in as it is allowing me to make a searchable database of video games for my review site. However I am at best a "power user" of code and PHP is way out of my comfort zone of editing.

I followed the walk through for getting the plug-in set up and running but I am having trouble with the last part, embedding the PHP code into the custom template. I use a theme called "The Source" from Elegant Themes and to be honest I have no clue where to copy and past the code into.

If there is anyway someone can point me in the right direction I can figure it out, but I just need a shove in the right direction. Obviously someone will need to look at my code so if access is needed to my WP Admin just let me know. Thank you so much and have a great day!

- Jonathan