Image gallery + mass populate it?

Hello everyone,

I'm working on my second ZenCart for this guy who collects police badges. He has approx 1400 that he wants to put up for sale and about 650 in his personal collection that he simply wants to display in a thumbnail gallery.

I've seen several threads about using 'Documents - General' under Catalog -> Product types and I'm a little lost.

I uploaded a general picture to test it out but is there somewhere else where I have to 'activate' it or turn it on so a link to the 'gallery' is visible? Do I create a specific directory to upload these pictures to as well?

Secondly, I've gotten easy populate installed and working fine for the products for sale but is there a way to do this with the 'gallery' as well that anyone knows of?

I don't know if it's necessary but here is the URL...
http://www.reservebadges.com

Thanks in advance :)