install portfolios enigma pro impossible

Hello,
I work with Enigma Pro. I want to install portfolios (10-40 images 2592×1944). When I create a page with two columns, or 3 or 4, I do not see any differences on the page (no visible thurnbail). How to put the images on the page?
Then when I add the portfolio, how to link to this page .. I really do not know, I’m looking for a day.

My website : https://www.paroisse-moutiers.fr