How to code the submit button?

[Sableye]

Hi, I am making a form in excel I have attached. The first page is dummy info and not confidential. I created a form out of the objects on sheet 3 and then had them route to sheet 4as a 'backend' before going to the main sheet (I still need to do this). But I have no idea how to code the command button to be able to re-enter information. I looked online and know I need to make it so where it outputs goes down a row but none of my tries have worked.