I need help inserting pictures in the “Faith” theme/layout

HI!

I am trying to help my church update their website. I uploaded the “Faith” theme, but I cannot figure out how to get the pictures to go into the sliders. Everytime I post a picture, the picture appears under the slider on the page.

Innitially, I downloaded a picture as in the homepage box, but it never appeared where I thought it would, so I have deleted it for now.

I am lost.

I’ve worked in wordpress before– editing articles for others, but that’s the limit of my computer knowledge.
Thanks!

The page I need help with: [log in to see the link]