Working on Connecting CMS to A Form that will populate pictures in a gallery

So I’m working on a project for a client and they need a download portal for their clients on their members area.
I created a form that links to a CMS table and populates image gallery.

The problem I am having now is, the CMS table has the Read and Write Property so the client can put in their name, team name, and date. But on the backend, I want this to be already in the CMS table so they can just put their name, team name, and date and the CMS will read their input and populate the image based on what already exist in the CMS table.

What am I doing wrong here?

Would Javascript help me in this situation? I am connecting this form to a CMS that customers can view their photos with but when I click the view more button it shows multiple photos vs just reading and pulling up that CMS result.

Website: http://www.lisnyc.com

When I click my button it simply goes down the list of the CMS collection rather than jump to the correct information for what was inputted. Is there anyway to change this?