New "education" item

Hello, I’m sending you this message because I don’t succeed in adding a new “education” item without modifying the structure of the template (when copying/pasting a “education” item to then modify it, it modifies the place of the “employment” item . How can we do to add a new “education” item,in the left of the page without “destroying” the right of the html template ? Thanks in advance for your answer .