How to edit a site with CodeIgniter

I'm trying to edit a site built with Codeigniter. I just want to add an extra page to the side menu but it's tied down by user permissions and stuff like that and I can't figure it out.

I just installed the framework and it's running on Xampp, but I don't know how to edit the site using it as this is my first time and I'm new to Web development in general. I'd really appreciate your help as I'm working against time. Thanks.

How did you set up the database? Did you import a database SQL dump file? Did you inherit someone's laptop that had the application running in or
is the site on a Cloud somewhere and you got access to the code?

I would recommend you step back and learn the basics. Be honest with whoever is giving you the tight deadlines. Tell them you will
need some time to figure things out.

AHirsi