Changing column layout

I did not originally set up this page and am not very knowledgable in Elementor so any help appreciated. The home page has 4 columns and if you look the 2 right most don’t line up correctly. I need to combine the 2 columns to the right then add an inner section witih 2 columns so I can keep the subject information alligned. (I think that is what I need to do). Can someone please tell me how to do this?

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